The rest of the shell is rolled towards the tooth in an anticlockwise direction, in order to remove it.

为了脱身，其余的壳就会以逆时针方向绕着牙齿旋转。

youdao

Turn the key in an anticlockwise direction.

逆时针方向转动钥匙。

youdao

Some species of snail have shells that spiral out in an anticlockwise direction, but it is much rarer.

有些种类的蜗牛有着从里到外逆时针的螺壳，不过这少见的多。

youdao

The rest of the shell is then rolled towards the tooth in an anticlockwise direction, in order to remove it.

ECONOMIST: Why some snails are left-handed