Ectomesoderm
外中胚层
🗣️ 情景例句
Grandpa wanted to lend us the money to buy one,
爷爷要借给我们钱去买房子，
We have agreed on all terms in the contract. Shall we sign it next week?
我们对合同各项条款全无异议，下周签合同如何？
You remember my friend who helped me out?
你还记得曾经帮助我摆脱困境的那位朋友吗？