Ectoderm
n. 外胚层, 外层\\n[医] 外胚层
🗣️ 情景例句
Not just for young people.
不仅仅对年轻人来说是这样。
Excuse me, what time will the plane arrive in Tokyo?
对不起，请问飞机何时到达东京呢？
as by falling into inaccessible caves, or into an ice crevasse, like the Siberian mammoths,
如掉进难以到达的洞穴，或掉进冰河裂缝里，或者像西伯利亚长毛象那样掉进冰窟中，