He has a habit of biting his nails.

他有咬指甲的习惯。

He has a bad habit of spit everywhere.

他有随地吐痰的坏习惯。

He has a habit of spitting in the sink.

他习惯在洗手池里吐痰。

He has a bad habit of biting his nails.

他有一个恶习，总是咬指甲。

He has a habit of running every morning.

他有每天早上跑步的习惯。

He has an odd habit of talking to himself.

他有一个奇怪的习惯，就是自言自语。

He has a habit of hoarding old newspapers.

他有囤积旧报纸的习惯。

He has a weird habit of talking to himself.

他有一个奇怪的习惯，就是自言自语。

He has a habit of collecting cassette tapes.

他有一个收藏盒式磁带的习惯。

He has a habit of betting on almost anything.

他有在几乎任何事情上打赌的习惯。