Thioaminopropionic acid
[医] 硫氢氨基丙酸, 半胱氨酸
🧩 词语组成解析
🗣️ 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。
Second thoughts are best.
三思而行，再思可也。
One Saturday afternoon, I hauled the machine into the garden and had a close look at it.
一个星期六的下午，我把割草机拉到了花园里，仔细检查了一番。