sing是指唱歌，鸟儿鸣叫
例句
1.
If the birds have not flown for three years, they will soar into the clouds. If they have not sung for three years, their songs will take everyone by surprise.
三年不蜚，蜚将冲天；三年不鸣，鸣将惊人。
2.
A pair of orioles sing amid the willows green.
两个黄鹂鸣翠柳。
sing是
1/sing释义：
vi. 唱歌；歌颂；鸣叫；呼号
vt. 唱；用诗赞颂；唱着使
n. 演唱；鸣声；呼啸声
2/例句：
Could you sing a song for me?
你能为我唱支歌吗？
The bird sings outside my window on time every day.
小鸟每天准时在我窗外鸣叫。
3/词组：
sing a song唱一首歌，唱支歌
sing out大声喊出；向法院或警方自供
sing on唱下去
