Cistine
氨基酸
🗣️ 情景例句
There has been very little progress this term.
这学期没有什么进步。
The rotten apple injuries its neighbours.
一只死老鼠，弄赃粥一锅。
was headed with a striking illustration of a lady in a state of considerable distress,
文章上方有一幅引人注目的插图，是一位表情沮丧的女子。