Tetrazone
四氮腙, 偶二氮化合物
🗣️ 情景例句
and it is on a half-acre lot.
用地半英亩。
I've been here for three weeks, and so far I've enjoyed it.
我已经在这里逗留了三个星期，到现在为止，我过得很好。
Then for a period of several weeks we practise doing the play.
随后几个星期我们进行排练。