1、clear
adj. 清晰易懂的，明白清楚的，不含混的；明显的，显然的，明确的，无疑的；清楚的，明白的
v. 移走，搬走，清除(不需要的东西)；清理；使人离开；恢复畅通；不再受阻
adv. 离开；不靠近，不接触；一直(到远处)
The cause of the accident was not immediately clear.
事故原因目前尚不清楚。
2、obvious
adj.明显的，显然的；易理解的；公认的，当然的；平淡无奇的，无创意的；因显而易见而不必要的
It's obvious he was trying to get away.
很明显他想逃跑。
It’s obvious that more work is needed to ensure opportunity is fully and fairly available to all.
很明显，要确保所有人都能充分、公平地获得机会，需要做更多的工作。
3、obviously
adv. (用于陈述认为别人已知道或希望别人同意的事)显然，明显地；(用于说明某种情况或事实)显而易见，明显，不言而喻
Picasso was obviously inspired by African art.
很明显，毕加索受到了非洲艺术的启发。
4、apparent
adj. 显而易见，明白易懂；显然；貌似的，表面上的，未必真实的
Now it is apparent that supply will not be an issue by fall.
现在很明显，等到了秋天，供应将不再是问题。
5、evident
adj. 清楚的，显而易见的，显然的
It's pretty evident that he was there at that time.
很明显他当时在那里。