1. Notice 通知，看见，注意，观察
- 通知（名词）：The company issued a notice to all employees about the upcoming changes.
- 看见：I noticed a new coffee shop on my way to work.
- 注意：Please notice the safety signs around the office.
- 观察：Scientists noticed a decrease in biodiversity in the area.
2. See 看见，理解，参观，遭遇
- 看见：I saw the stars last night.
- 理解：Let me see if I can explain it differently.
- 参观：We plan to see the historical sites on our trip.
- 遭遇：He has seen many difficult situations in his life.
3. Watch 看，观看，小心，等待
- 看：She watched the children playing in the park.
- 观看：We watched a movie last night.
- 小心：Please watch your step on the stairs.
- 等待：I'll wait and see if the store has the item in stock.
4. Observe 观察，遵守，说，庆祝
- 观察：Researchers observed the behavior of the animals in their natural habitat.
- 遵守：It is important to observe traffic regulations.
- 说：He observed that the quality of the product had improved.
- 庆祝：Some cultures observe strict fasting rituals for religious reasons.
