One is never too old to learn.活到老,学到老You are never too young to start doing things .你从不因为太小而不开始做事情the box is so heavy that I can't carry 这个盒子太沉了,我搬不动它he is so young tha...最好用high，sweet，fresh造句The mountain is so high that I can't climb 这座山太高了，我爬不上去The sugar is too sweet to eat这块糖太甜了以至于不能吃the air is never too fresh to respire.空气从不因太新鲜而不去呼吸