求翻译以下英语句子,麻烦分析下1 、generate the callbacks for any attribute t
求翻译以下英语句子,麻烦分析下
1 、generate the callbacks for any attribute that requires one.
为什么后面还多个requires one 这看的好别扭的啊
2、Making these changes now will save you some time and frustration as you go through the exercises in this book.
save some time 明白,但是save frustration是啥意思?这么用可以啊?
3、 It is hoped that being able to contrast the new with the old has added to your appreciation for what you will soon be able to do
这句话应该怎么翻译啊?看着头晕,尤其是后面那个for 啊,has added是修饰谁的?语法上怎么分的啊?