Polyyne
聚炔烃
🗣️ 情景例句
It was so nice to be out in the country.
出去置身乡下真是太好了。
You'll have to decide whether you want to pass your examinations or just have a good time.
你必须决定你是想通过考试还是好好玩一玩。
Money is no more than our servant.
金钱不过是我们的仆人。