Pholocatalyst
[医] 光催化剂
🗣️ 情景例句
Oh, I'm sorry Susan isn't here.
啊 可惜Susan不在。
Who assumes shipment cost?
谁负担运费呢？
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。