Drop a line.
寫信
Drop a line"是一個輕鬆的說法，意思是給某人寫信或發送短信，通常用於朋友間的非正式溝通。
範例句子
Don't forget to drop a line when you get to London!
到倫敦的時候別忘了聯繫我！
Just wanted to drop a line and say hi!
只是想打個招呼，說聲嗨！
If you have time, drop a line; we haven't heard from you in ages!
如果你有時間，聯繫我；我們已經很久沒聽到你的消息了！
