Indoleactic acid
[机] 乙酸
🧩 词语组成解析
🗣️ 情景例句
We must.
我们是该开始了。
He has lived here for a year.
他在这儿住了一年。[持续到现在的行为]
The old lady was glad to be back at the block of flats where she lived.
老妇人回到了她居住的公寓楼，心里很高兴。