night and day

1. All the time; continuously. I've been studying night and day to get ready for this test.

2. Describing a contrast between two completely different things, often one that has resulted in improvement. Often preceded by "like." Her transformation has really been night and day. She doesn't even look like the same person. A: "Have you seen any improvement in his behavior?" B: "Oh, it's like night and day. He's been a model student this month."

See also: and, night

Farlex Dictionary of Idioms.

night and day

Also day and night. Continually, without stopping. This phrase is used either literally, as in The alarm is on night and day, or hyperbolically, as in We were working day and night on these drawings. Shakespeare put it by night and day in The Comedy of Errors (4:2): "Time comes stealing on by night and day."

See also: and, night

The American Heritage® Dictionary of Idioms by Christine Ammer.

night and day

all the time; constantly.

See also: and, night

Farlex Partner Idioms Dictionary

ˌnight and ˈday

ˌday and ˈnight

all the time; without stopping: She worked night and day on the report until it was finished.

See also: and, night

Farlex Partner Idioms Dictionary

See also:

day and night
slog away
all night long
rivet (one's) eyes on (someone or something)
rivet (one's) glare on (someone or something)
put one foot in front of the other
be banging (one's) head against a brick wall
be banging your head against a brick wall
be banging, etc. your head against a brick wall
be hitting (one's) head against a (brick) wall

词组	night and day
释义	night and day night and day 1. All the time; continuously. I've been studying night and day to get ready for this test. 2. Describing a contrast between two completely different things, often one that has resulted in improvement. Often preceded by "like." Her transformation has really been night and day. She doesn't even look like the same person. A: "Have you seen any improvement in his behavior?" B: "Oh, it's like night and day. He's been a model student this month." See also: and, night Farlex Dictionary of Idioms. night and day Also day and night. Continually, without stopping. This phrase is used either literally, as in The alarm is on night and day, or hyperbolically, as in We were working day and night on these drawings. Shakespeare put it by night and day in The Comedy of Errors (4:2): "Time comes stealing on by night and day." See also: and, night The American Heritage® Dictionary of Idioms by Christine Ammer. night and day all the time; constantly. See also: and, night Farlex Partner Idioms Dictionary ˌnight and ˈday , ˌday and ˈnight all the time; without stopping: She worked night and day on the report until it was finished. See also: and, night Farlex Partner Idioms Dictionary See also: day and night slog away all night long rivet (one's) eyes on (someone or something) rivet (one's) glare on (someone or something) put one foot in front of the other be banging (one's) head against a brick wall be banging your head against a brick wall be banging, etc. your head against a brick wall be hitting (one's) head against a (brick) wall
随便看	give an arm and a leg for give an arm and a leg (for something) give an arm and a leg for something give and take give an ear (to one) give a new lease of life give an inch Give an inch and he'll take a mile give an inch and they'll take a mile give anything (for something) give a pain give a piece of mind give (a) preference to (someone or something) give a rah-rah speech give a rat's arse give a red face give a ring give as good as one gets give as good as you get give a shit give a shit about (someone or something) give a shit about someone/something give a shite give a sneck posset give a try