concern involve都当“涉及到”讲时有何区别?

involve 和 concern 都作涉及的意思时有什么区别? concern与involve的区别 concern与involve的区别? association union institute当“协会”讲时有何区别? travel trip tour 当“旅行”讲时有何区别? take 与 cost 当花费讲时有何区别 delete cancel都作“删除”讲时有何区别? slice与chip都当“薄片”讲,有何区别? attract,fascinate都当吸引讲,有何区别? 当注视与凝视都指具体事物时有何区别 go on,last,continue作继续讲时有何区别 realise和come true当实现讲时有什么区别