turn的读音是：
英 [tɜːn]
美 [tɝn]
turn
1、vt.& vi.
使转动；旋转；使改变方向；使不适
2、vt.
使变酸；使变换；使变为
3、n.
翻转；（路线或方向的）改变；机会
4、第三人称单数:turns 过去式:turned 过去分词:turned 现在分词:turning
5、例句：
The government did an about-turn over nuclear energy.
Turn the key clockwise.
I'm cold.Turn the heating up.
At the next crossroads,turn right.
Whose turn is it to deal?
