Mesectoblast
中外胚层, 外中胚层
🗣️ 情景例句
Here are the samples for your examination.
这里是样品，请查看。
I meet the boy whose aunt is a clerk.
我遇到那个男孩的姑妈是店员。
You'll know our products better after this visit.
参观后您会对我们的产品有更深的了解。