Basal ectoderm
[醫] 底外胚層
?? 詞語組成解析
basal
['beis?l]
adj. 基底的，在底部的，基礎的;
n. 外胚層, 外層\\n[醫] 外胚層
??? 情景例句
The new students seem to be shaping up quite nicely.
新生們看來表現得相當不錯。
Chances are slim.
機會很小。
He lived in this century, was born in Germany and spent the last part of his life in the USA.
他生活在本世紀，出生于德國，在美國度過了他的晚年。