Mesostomoblaste
中胚层口道细胞
🗣️ 情景例句
I don't know if I can get to sleep.
我不知道我能否睡得着。
The market is declining, we recommend your immediate acceptance.
市场在萎缩，我们建议你方马上接受。
I knew that my turn had come.
我知道这次该轮到我了。