Triaromatics
三环芳香烃
🗣️ 情景例句
Lacks vitality.
缺乏活力。
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
He did not look up from his desk when I entered.
我进去的时候，他连头也没抬。