Phstocatalyzer
[医] 光催化剂
🗣️ 情景例句
We talk about him at dinner time.
我们吃晚餐时总谈起他。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
There is an interesting film on Channel one.
在一频道有一部有趣的电影。