Ectomesoderm
外中胚层
🗣️ 情景例句
And I'll need to see your passport.
另外，我需要看一下您的护照。
The editor is getting a story ready for print.
编辑在准备把记事付印。
When Christ was born nearly two thousand years ago, many people, rich and poor, gave him presents.
大约2000年前基督出生时，许多人，不论穷富，都给他礼物。