腕を組む。の英語

link arms

to link one's arms through another's―link arm in arm

I cross my arms.

to link one's arm through another's―link arm in arm

to improve oneself in an art―perfect oneself in an art

to bare one's arms―turn up one's sleeves―roll up one's sleeves

break one's arm

to come to blows

to bare an arm

to exercise one's talent―show one's talent

bind the arms of

to twist muscle of one's body

to link one's arm through another's―link arm in arm

to fold one's arms

Pull back your arms!

to do one's utmost―strive to the utmost―strain every nerve

to link one's arm with someone else's

to improve one's skill―improve one's ability

a support for the arm

seated with arms across

He has his arm in a sling.

skill―dexterity―mastery

to perfect oneself in an art

to improve oneself in an art

a single arm

to strain the arm

（自分の腕なら）to try one's hand （at anything）―（人の腕なら）―put one's ability to the test

to make someone carry something in his/her arms

an arm

He has improved in his ability.