shoulder/'ʃəuldər/

1.noun [c] 
肩膀

2.vt.[+responsibility] [ blame] 
承担

to look over one's shoulder
焦虑不安
to rub shoulders with sb
和某人有交往
to work shoulder to shoulder
齐心协力地工作
we will stand shoulder to shoulder with our allies
我们将与我们的同盟并肩协力