Bioxyl
氯化氧铋
🗣️ 情景例句
He will not see me stopping here
他不会看到我驻足此地
Teaching others teaches yourself.
教学相长。
These days, advertisers not only offer free samples, but free cars, free houses, and free trips round the world as well.
目前，做广告的人不仅提供免费样品，而且还提供免费汽车，免费住房，免费周游世界。