1 to feel distressed about sth

2 heartache

3 cardiac pain

1 ache

2 pain

3 sorrow

4 deeply

5 thoroughly

1 pain

2 suffering

3 painful

4 classifier: 个 gè

1 to have a headache

1 lit. doesn't hurt, doesn't tickle (idiom); sth is wrong, but not quite sure what

2 fig. not getting to any matter of substance

3 scratching the surface

4 superficial

5 perfunctory

1 don't do it, or don't rest (idiom); either give up, or go through to the end

2 Since we started, we must carry it through whatever happens.

3 in for a penny, in for a pound

1 lit. when a man achieves the Dao, his poultry and dogs rise to Heaven (idiom)

2 fig. to ride on sb else's success

3 Once one man gets a government position, all his cronies get in too

4 Once sb has cracked the problem, every Tom, Dick and Harry can do it

1 to live miles apart (idiom)

1 news pass quickly from mouth to mouth (idiom)

2 an infectious disease spreads quickly (old meaning)

1 happy on the one hand, but worried on the other (idiom)