“转身”常见的英文表达有 turn around、turn one's back 或 spin around 等，具体使用哪个取决于语境：
1、 turn around
含义：指身体或头部从面向一个方向转到另一个方向，是最常用、最通用的表达“转身”的短语。
例句：
He turned around and walked away.（他转身走开了。）
When I called her name, she turned around and smiled at me.（当我叫她的名字时，她转过身来对我微笑。）
2、 turn one's back
含义：字面意思是“转过身去，背对着某人”，常引申为“忽视、拒绝帮助或故意不关注某人”。
例句：
He turned his back on his old friends when he became famous.（他成名后就忽视了老朋友。）
Don't turn your back on those in need.（不要忽视那些需要帮助的人。）
3、 spin around
含义：强调快速地旋转身体，常带有一种活泼、突然或夸张的意味。
例句：
The child spun around excitedly when he saw the present.（孩子看到礼物时兴奋地转了个圈。）
She spun around to face the attacker.（她迅速转身面对袭击者。）