Lifeguarding
(lifeguard 的现在分词) n. 卫兵, 禁卫军, 救生员
🗣️ 情景例句
The meat's been marinating all night.
昨晚就把肉腌上了。
Old wood is best to burn, old book to read.
老柴好烧，老书宜读。
the waters flow more quietly, and in the end, without any visible break,
河水流得平缓起来，最后连绵不断地