双臂交叉在胸前
to bring your arms close to your chest and hold them together
He folded his arms and shook his head disapprovingly.
He looked around the room and then folded his arms across his chest.
If you fold your arms, people will think you are upset and defensive.
I used to know when my dad was cross with us because he would fold his arms.
He leaned back in his chair, folded his arms and put his feet up on the desk.
See also: fold verb (BEND)