Ectomesoderm
外中胚层
🗣️ 情景例句
You'll see a dotted line on the last page.
你会在最后一页上看到一条虚线。
I must admit I had my doubts.
我必须承认我当初是我疑虑的。
We needed no further warning.
我们不需要进一步的警告了。