Mesendoderm
[医] 中内胚层
🗣️ 情景例句
Nowadays many TV programs need parental guidance.
现在许多电视节目需要在家长指导下观看。
A stitch in time saves nine.
小洞不补，大洞吃苦。
All products have to pass strict inspection before they go out.
所有产品出厂前必须要经过严格检查。