1 winter vacation

1 cold (climate)

2 frigid

3 very cold

1 pain

2 suffering

3 painful

4 classifier: 个 gè

1 bitter

2 hardship

3 pain

4 to suffer

5 to bring suffering to

6 painstakingly

1 exhausting

2 hard

3 tough

4 arduous

5 to work hard

6 to go to a lot of trouble

7 hardship(s)

1 one day's sun, ten days' frost (idiom, from Mencius); fig. to work for a bit then skimp

2 sporadic effort

3 short attention span

1 one day's sun, ten days' frost (idiom, from Mencius); fig. to work for a bit then skimp

2 sporadic effort

3 lack of sticking power

4 short attention span

1 unable to bear the pain (idiom)

1 lit. the pain of being hanged upside down (idiom); fig. extremely critical situation

2 dire straits

1 to have suffered all kinds of hardships (idiom)