The treatment lasts for 15 sessions, the first 5 all in a row and after that every second day.

治疗持续15次，开针的5次要每天都来，而后每隔一天一次。

'If you're a guy with fine hair and it tends to get flat and greasy though, shampoo it every second day,' he says.

他表示，“如果你头发较细，容易紧贴头皮并且还出油，那就每隔一天洗一次头发。”

Chinese folklore says that every second day of the second lunar month is the time when the dragon in charge of the rain lifts its head.

在中国，龙抬头是个吉祥的日子，俗话说“龙不抬头，天不下雨”，龙是祥瑞之物，又是和风化雨的主宰。

There is one military aid on duty every second of every day including overnight.

所以每天每秒钟,包括整一个晚上,都有一个军事助理值班。