夜
以
繼
日
夜
以
繼
日
Definitions4 characters (idiom); continuous strenuous
Usage•••frequent
Pronunciations
夜
以
繼
日
As word
1night and day (idiom); continuous strenuous effort
2night and day (idiom); continuous strenuous effort
3night and day (idiom); continuous strenuous effort
4night and day (idiom); continuous strenuous effort