Keratan
角质素
🗣️ 情景例句
I'll pick you up here at seven .
我七点钟到这儿来接你 。
I'll finish working at 5:30 and get home by 6 o'clock.
我希望在5:30完成工作并且在6点钟回家。
however well we look after ourselves,
不管我们怎样精心照料我们自己，