Lacs
[医][=light-activated cell sorter]光激活细胞分离器
🗣️ 情景例句
It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
What's your plan for the summer holiday?
暑假计划干什么？
No, she's much younger than I am. She only started here this term.
对，她年纪比我小得多。她是这个学期才进校学习的。