Basal ectoderm
[医] 底外胚层
🧩 词语组成解析
basal
['beisəl]
adj. 基底的，在底部的，基础的;
n. 外胚层, 外层\\n[医] 外胚层
🗣️ 情景例句
Good.
好。
I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业，所以今晚我只能花一小时看电视。
There was a big smile on her face.
她脸上充满笑容。