Polychlorohydrocarbon
多氯代烃
🗣️ 情景例句
Frankly, neither was I.
坦白的说 ，我当年也不好。
The greatest obstacle to progress is prejudice.
进步的最大障碍是偏见。
For one thing, when you earn money, you will not have to keep on asking your parents for money.
首先，当自己挣了钱，你就用不着老向父母要钱了。