tip 指向一边倾斜或向上翻转、失去平衡或完全翻转过来。
slope 指向上或向下渐渐倾斜的表面，多用于山、屋顶等缓缓倾斜。
tilt 指有意识地或长时间地使物体处于倾斜状态。
参考例句
1. Tip me over and pour me out. 请把我壶盖揭开，并倒出来吧。
2. She gave the porter a small tip. 她给了行李服务员一点小费。
3. Ask if you should tip and how much. 先问问是否该给小费和该给多少。
英英解释
n.
1. the extreme end of something; especially something pointed
2. a relatively small amount of money given for services rendered (as by a waiter)
3. an indication of potential opportunity
4. a V shape
5. the top point of a mountain or hill v.
1. cause to tilt
2. mark with a tip
3. give a tip or gratuity to in return for a service, beyond the compensation agreed on
4. cause to topple or tumble by pushing
5. to incline or bend from a vertical position
6. walk on one's toes
7. strike lightly
8. give insider information or advise to
9. remove the tip from
