to visit someone informally or without prior notice
非正式地或在没有事先通知的情况下拜访某人 (fēi zhèngshì de huò zài méiyǒu shìxiān tōngzhī de qíngkuàng xià bàifǎng mǒurén)
"Feel free to drop by anytime for a cup of tea."
"随时过来喝一杯茶，随时欢迎。" (Suíshí guòlái hē yībēi chá, suíshí huānyíng.)
to pause or stop doing something temporarily
to imagine or invent something new or creative
to discuss possible objectives informally
to change from one job or career path to another
to stop feeling angry or resentful toward someone for someth...
to develop resistance to a disease
