He was sleeping with his head __his arms.Aover Baround

He was sleeping with his head __his arms.Aover Baround
He was sleeping with his head __his arms.Aover Baround

He was sleeping with his head __his arms.Aover Baround
over 指在什么之上.
around指在什么周围.
他的头应该是枕在他的胳膊上的.
意思：他正枕在他的胳膊上睡觉.

over

我觉得选 around
我的第一感觉