Ribothymidine
胸腺嘧啶核糖核苷
🗣️ 情景例句
We haven't heard from him for weeks but we're still hoping for a letter.
我们已经有几个星期没有他的消息，但仍然盼望着他的来信。
What can I do?
我该怎么办哪？
Collecting small items can easily become a mania.
收集小玩艺儿很容易着迷。