Photosystem i
[建] 光系I
?? 詞語組成解析
n. [生化]光合體系
??? 情景例句
and I stayed out an extra half hour.
我還特別多待了半個小時。
The homework took me a whole day.
做家庭作業花了我一整天的時間。
Good news?Why?
好消息？為什么？