Selachine
鲨白化素
🗣️ 情景例句
However, through my experience in business at home and abroad.
但从事国内外的商业的经历中。
She is sick in bed.
她卧病在床。
There are eighteen floors in the building, and he lives on the fifteenth floor.
这幢大楼有18层。他住在第15层。