记录小组：2304班3组

组员：高圣益、赵海曦、卢一尘、胡延璐、吉漪静、魏弘益

今天是在法国研学的第三天。天色初曦，东方既白，我们的巴士掠过城市楼房的绰绰剪影，驶向枫丹白露森林，今天我们将在这片原始森林中完成定向越野比赛以及水取样。随着我们与森林的距离逐渐缩短，窗外的橡树轮廓渐渐稠密，空气中开始弥漫着腐殖土特有的湿润气息。作为生物科学专业的学生，这片被巴比松画派歌颂过的森林，于我们而言不仅是风景，更是一册等待解读的自然典籍。

进入森林后，老师们为我们详细地讲述了定向越野比赛的规则以及注意事项还有水取样的方法和数据要求，随后我们按照之前的分组前往森林中不同的区域比赛以及水取样。

定向越野比预期更具挑战性。分发到同学们手中的地图精巧简单，如同电影里那些无比寻常的藏宝图，可当大家亲自使用罗盘寻找方向时，地图上那些纤细的棕色曲线突然变得陌生起来，地图上被比例尺缩短的距离在我们的行进过程中被无限放大，看似不远的路程耗费了大家大量的时间和精力。虽然历尽艰辛，但最后同学们找到了标志物并根据问题作出解答，成功完成了里程打卡。

正午的采样工作在地图上标记的河边展开。当拨开草丛的遮挡，惊起几只豆娘，它们钴蓝色的翅膀在阳光下划出细碎的闪光。采样瓶入水的刹那，溪流立刻在玻璃上凝结出水珠，泥沙混杂着不知名的水草一股脑地溜进瓶里，测量仪器中的参数不断跳动，像是被这片森林赋予了生命——大家想明天的样本检测环节一定会非常精彩。

下午，巴士驶入一片现代化的科技园区——YPOSKESI。YPOSKESI公司规整的墙壁在阳光下泛着冷冽的白光，与清晨的古老森林形成了奇妙的时空对话。

YPOSKESI公司是一家专注于细胞和基因治疗领域的合同开发与制造组织，它被认为是欧洲领先的基因疗法病毒载体CDMO制造商，其在病毒载体生产方面的技术和能力使其在基因治疗领域具有重要的市场地位。接待我们的工作人员有着典型的法国式严谨。他带领我们穿过一条充满未来感的白色走廊，两侧透明实验室里，穿着白大褂的研究人员正在操作着精密的设备。“这里每一个不锈钢罐体都是会呼吸的生命体，”他的手指轻触控制面板，3D显示屏立刻浮现出实时代谢数据流，“我们致力于细胞和基因治疗。”

最震撼的莫过于中试车间的“活体图书馆”——整面墙的低温储藏柜里，超过2000种工程菌株在液氮中沉睡。“这里冻结着可能改变生物未来的钥匙。”管中冰晶折射的光斑在雪白的墙壁上跳动，像某种来自未来的摩斯密码。

暮色中的返程巴士上，森林的腐叶气息似乎还萦绕在鼻尖，但衣物上残留的酒精消毒剂味道提醒着我：今天的研学，在年轮与基因之间架起了一座看不见的桥梁。

Today is the third day of studying in France. At dawn, as the east turns white, our bus brushes past the silhouette of city buildings and heads towards the Maple White Dew Forest. Today, we will complete a orienteering race and water sampling in this pristine forest. As our distance from the forest gradually shortened, the contours of the oak trees outside the window became denser, and the air began to be filled with the unique moist scent of humus soil. As students majoring in biological sciences, this forest, praised by the Babson School of Painting, is not only a scenery for us, but also a natural scripture waiting to be interpreted.

After entering the forest, the teachers explained in detail the rules and precautions of orienteering competitions, as well as the methods and data requirements for water sampling. Then, we went to different areas of the forest to compete and take water samples according to our previous grouping.

Off road orienteering is more challenging than expected. The maps distributed to us are exquisite and simple, like those incredibly ordinary treasure maps in movies. However, when we personally use a compass to find direction, the slender brown curves on the map suddenly become unfamiliar. The distance shortened by the scale on the map is infinitely enlarged during our journey, and the seemingly short distance consumes a lot of our time and energy. Despite the hardships, we finally found each landmark and provided answers based on the questions on them, successfully completing the mileage check-in.

The sampling work at noon is carried out by the river marked on the map. We cleared the cover of the grass and startled a few damsels, whose cobalt blue wings flickered in the sunlight. At the moment when the sampling bottle was filled with water, the stream immediately condensed water droplets on the glass, and mud mixed with unknown aquatic plants slipped into the bottle. The parameters in the measuring instrument kept jumping, as if they had been given life by this forest - I think tomorrow's sample testing session will be very exciting.

In the afternoon, our bus drove into a modern technology park - YPOSKESI. The orderly walls of YPOSKESI company emit a cold white light in the sunlight, forming a wonderful dialogue of time and space with the ancient forest in the morning.

YPOSKESI is a contract development and manufacturing organization focused on the fields of cell and gene therapy. It is considered a leading gene therapy virus vector CDMO manufacturer in Europe, and its technology and capabilities in virus vector production give it an important market position in the field of gene therapy. The staff who received us had a typical French style rigor. He led us through a futuristic white corridor, with transparent laboratories on both sides where researchers in white coats were operating precision equipment. Every stainless steel tank here is a breathing organism, "his finger lightly touched the control panel, and the 3D display immediately showed real-time metabolic data flow." We are committed to cell and gene therapy

The most shocking thing is undoubtedly the "living library" in the pilot plant - the entire wall of low-temperature storage cabinets, where over 2000 engineering strains sleep in liquid nitrogen. The key that could change the future of life is frozen here. The light spots refracted by the ice crystals in the tube bounce on the snow-white wall, like some kind of Morse code from the future.

On the returning bus in the twilight, the scent of decaying leaves from the forest seemed to linger on my nose, but the lingering smell of alcohol disinfectant on my clothes reminded me that today's study has built an invisible bridge between tree rings and genes.