1 to use

2 to employ

3 to apply

4 to make use of

1 letter

2 mail

3 classifier: 封 fēng

4 to trust

5 to believe

6 to profess faith in

7 truthful

8 confidence

9 trust

10 at will

11 at random

1 information

2 news

3 message

1 to use

2 to employ

3 to have to

4 to eat or drink

5 expense or outlay

6 usefulness

7 hence

8 therefore

1 to be convinced (that sth is true)

2 to believe

3 to accept sth as true

1 to do two things at once (idiom)

2 to multitask

3 to divide one's attention

1 to speak without thinking (idiom)

2 to blurt sth out

1 to be trusted both at home and abroad (idiom)

1 brimming with confidence (idiom)

1 to have an ulterior motive (idiom)