1.be confined to 限制于
This slowdown is not confined to America.
这种经济放缓情况并不仅限于美国
2.roam around 闲逛
After dark, I liked to roam around the fields along footpaths.
黄昏,我喜欢沿着田间小道漫步
3.enroll in 参加
You might attend a lecture, enroll in a course, or browse through a bookstore.
你可以去听听讲座,参加课程或在书店浏览书籍
4.every little helps 点滴皆有用
Of course I need your help. You know every little helps.
我当然需要您的帮助