shoulder to shoulder肩并肩

a shoulder to cry on 倾诉者；倾诉的对象

If someone offers you a shoulder to cry on or is a shoulder to cry on, they listen sympathetically as you talk about your troubles.

• Mrs. Smith / longs to be at her daughter's↗ side / to offer her a shoulder↗ to cry on. ↘

Smith夫人希望能在女儿身边听她的倾诉。

shoulder to shoulder  肩并肩地；齐心协力地

If people work or stand shoulder to shoulder, they work together in order to achieve something, or support each other.

• They could fight shoulder↗ to shoulder / against a common enemy. ↘
他们能同心协力地抗击一个共同的敌人。

shoulder the responsibility of…肩负/承担…的责任

V-T If you shoulder the responsibility of something, you accept it.

• He has to shoulder the responsibility↗ / of his father's mistakes. ↘

他不得不肩负起他父亲所犯错误的责任。