Ectoblast
n. 外胚层\\n[医] 外胚层, 外膜
🗣️ 情景例句
He has a major toy buyer in Los Angeles,
他在Los Angeles有一个玩具大买主，
I'm sorry,but both of them are busy right now.
很抱歉他们现在很忙。
The inspector began to look for fingerprints, while the constable checked that the front door locks had not been forced,
巡官开始搜寻指纹，警察经检查发现大门锁头并无撬过的迹象。