cling和clench的区别

cling是执着的意思，而clench则是紧握的意思，区别可以从以下例子看出：

You don't have to cling so much, don't worry. As long as we clench the hands, we will not separate, will not be lost. 你不用那么执着，不用担心，只要握紧双手，就不会分开，不会迷失。