She never cheapened herself by lowering her standards.她从不降低标准来贬低自己。When America boycotted the Moscow Olympics it cheapened the medals won...美国抵制莫斯科奥运会的行为使金牌的含金量降低了。Love is a word cheapened by overuse.“爱”这个字眼用得太滥不值钱了。The ...
It is gravitation that causes the apple to fall.是地心吸引力使苹果下落.We owe to Newton the principle of gravitation.万有引力原理的发现应归功于牛顿.The law of gravitation explains many phenomena not previously, understood.引力定律解释了许多以前所不能理解的现象....