Lwm
abbr. 低潮标志（Low Water Mark）
🗣️ 情景例句
Oh, a new baby!
噢， 一个新生儿！
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手，直到火车驶出了视线。
So I will receive and sign it overnight.
那么，我明天就可以收到并且签上名了。