图解美国接头常用英语俚语D-8: Drop a line/ drop in/ by/ over (mp3)

1. Drop a line 写信

Drop me a line! 给我写信！

2. Drop in/ by/ over 随时造访

Feel free to drop in anytime; I'm usually home and I love company.
欢迎随时来坐坐，我通常在家，也喜欢有人做伴。