守口如瓶

1。He is a clam about his clambake.

他对那次社交集会的事情守口。

Who will open himself to a blab?

愿向一个不肯守口的人说心里话呢?

The old hermit was very cagey about her past life.

老隐士对自己过的生活守口。

Her tight-lipped friend had kept it a secret.

她那守口的朋友对这事一直保密。