A：I must be going.
我得走了。
B：Okay. Keep in touch.
好的。保持联络。
注释：
表示“保持联络”时，可用下列重要词组：
keep in touch (with+人)
= keep in contact(with+人)
contact n.接触
例：Though we haven't seen each other for quite a long time, we still keep in touch by mail.
(我们虽然已经很久没见面，但仍以书信保持联络。)