1 accidental

2 image

3 pair

4 mate

1 idol

1 incidentally

2 occasional

3 occasionally

4 by chance

5 randomly

1 occasionally

2 once in a while

3 sometimes

1 a chance encounter

2 to meet accidentally

1 lit. to be together from the first beat (idiom)

2 to hit it off

3 to click together

4 to chime in easily

1 lit. three ignorant cobblers add up to a genius (idiom); fig. collective wisdom

1 harmonious combination of Chinese and Western elements (idiom)

1 to do sth once in a while (idiom)

2 to do sth more as an exception than the rule

1 chance remarks can lead to public execution (idiom)