21. experience n. 经验
☆ I don't have much experience with computers.
我没怎么用过电脑。
22. friendship n. 友谊
☆ I really appreciate your friendship.
我真的很感谢你的友谊。
23. difference n. 差异；差别
☆It won't make much difference whether you go today or tomorrow.
你今天去也好, 明天去也好, 关系不大。
责任编辑：虫虫
