Malononitrile
丙二腈
🗣️ 情景例句
We haven't had any more news from the frontier, so we'll just have to be patiend.
我们还没得到来自前方的进一步消息，所以我们只有耐心等待。
Do you have some envelopes?
你有信封吗？
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。