攜手並肩

hand in hand and shoulder to shoulder

to carry / to take along / to bring along / to hold (hands) / also pr. [xi1]

hand in hand / to join hands / to collaborate

hand / (formal) to hold / person engaged in certain types of work / person skilled in certain types of work / personal(ly) / convenient / classifier for skill / CL:雙|双[shuang1],隻|只[zhi1]

and / furthermore / also / together with / (not) at all / simultaneously / to combine / to join / to merge

alongside / shoulder to shoulder / side by side / abreast

shoulder / to shoulder (responsibilities etc)