spare save意为节约时有何区别

spare save意为节约时有何区别 although 与 while 意为“尽管,”时有何区别? appear和seem为“似乎”之意时有何区别? review comment criticism表示“评论”之意时有何区别? cell 和 battery表达“电池”之意时有何区别? pressure stress都表达“压力”之意时有何区别? presence existence表达“存在”之意时有何区别? strain stress tension表达“紧张”之意时有何区别? sense sensation feeling表达“感觉”之意时有何区别? deed merit exploit表达“功绩”之意时有何区别? stick glue paste表达“粘贴”之意时有何区别? reveal disclose expose表达“揭露”之意时有何区别?