Edrf
内皮细胞舒血管因子
🗣️ 情景例句
He's stepped out of the office for a little while.
他离开办公室刚一会儿。
I hope you can find your book soon.
我希望你很快就找到你的书。
He asked very politely, Excuse me, have you got any books about the moon and the stars?
“请问，你有关于月亮和星星的书吗？”