Poly(propylene glycol)
[化] 聚丙二醇
🗣️ 情景例句
A friend in need is a friend indeed.
患难朋友才是真正的朋友。
Please make an offer indicating the packing.
请报价并说明包装情况。
Oh, good! He's coming down the ladder, now.
噢，好！现在他正从梯子上爬下来。