1 (completed action marker)

2 (modal particle indicating change of state, situation now)

3 (modal particle intensifying preceding clause)

1 to understand

2 to realize

3 to find out

1 in order to

2 for the purpose of

3 so as to

1 eye

2 small hole

3 crux (of a matter)

4 classifier: 只 zhī

5 classifier: 双 shuāng

6 classifier for big hollow things (wells, stoves, pots etc)

1 tears

2 crying

3 classifier: 滴 dī

1 with one's face covered in tears (idiom)

1 lit. one strong beat and one weak beats in a measure of music (two beats in the bar) (idiom); fig. follow a prescribed pattern to the letter

2 scrupulous attention to detail

1 lit. one strong beat and three weak beats in a measure of music (four beats in the bar) (idiom); fig. scrupulous attention to detail

1 obvious at a glance (idiom)

1 obvious at a glance (idiom)