A：Bye. Take care.
再见，保重。
B：You too.
你也是。
注释：
a.Take care.保重。
本句是由下句简化而成：
Take care of yourself.
(照顾自己。)
b.take care of...照顾……
= look after...
例：The three brothers took tums taking care of their sick father.
(三兄弟轮流照顾生病的父亲。)