1 guarantee

2 to guarantee

3 to ensure

4 to safeguard

5 to pledge

6 classifier: 个 gè

1 to lean against

2 to rely on

3 on the basis of

4 no matter (how, what etc)

5 proof

1 to be witness to

2 witness

3 evidence

1 certificate

2 proof

3 to prove

4 to demonstrate

5 to confirm

6 variant: 症 zhèng

1 negotiable security (financial)

2 certificate

3 stocks and bonds

1 in support or witness hereof (idiom)

1 lit. sitting at ease in a fishing boat despite wind and storm (idiom); to stay calm during tense situation

2 a cool head in a crisis

1 (idiom) you can't rely on a verbal agreement

2 just because sb says sth, doesn't mean it's true

1 fabrication relying on nothing (idiom); frame-up

1 to drive non-stop as fast as one can (idiom)