1 to be connected

2 traffic

3 transportation

4 communications

5 liaison

1 (business) company

2 company

3 firm

4 corporation

5 incorporated

6 classifier: 家 jiā

1 surname Li

1 to exploit

2 to make use of

3 to use

4 to take advantage of

5 to utilize

1 benefit

2 (in sb's) interest

3 classifier: 个 gè

1 small capital, huge profit (idiom); to put in a little and get a lot out

1 lit. doesn't (even) enter a single aperture (of one's head)

2 I don't understand a word (idiom)

3 it's all Greek to me

1 grasp this fundamental point and all the rest will follow (idiom)

1 to act in collusion (idiom)

1 mutual exchange of assistance (idiom)

2 to benefit from each other's strengths and make up each other's shortfalls

3 to reciprocate with material assistance

4 scratch each other's back