Kollag
固体润滑剂
🗣️ 情景例句
Did you ever think of photographing an aerobics class?
你想过拍摄有氧运动课吗？
Dreams go by contraries.
梦想总与现实相反。
They will also be building new roads and a special railway line.
他们还将修筑一些新的道路和一条铁路专线。