Diothyl
嘧啶磷
🗣️ 情景例句
It's a Stewart tradition. We're a family.
这是Stewart家的传统。我们是一家人。
I suggest that you tear up the letter and start over again.
我建议你撕破信再来一遍。
It is thought that they arrived more than 30,000 years ago by crossing a land bridge from Asia to America.
他们被认为是在3万多年以前从亚洲跨越一座陆桥来到美洲的。