careful
单词辨析：
指明智而谨慎的，尤指避免不必要的风险，不贸然行事。
It might be prudent to get your parents' opinions before you make the final decision.
作最后决定之前问问你父母的意见兴许更稳妥。
My suggestion is that you should talk with the prudent house buyers.
我的建议是你应该和谨慎的购房者聊聊。
指非常小心的，力求避免做错事或造成损失。
He is the most careful driver she has ever met.
他是她见过的最谨慎的司机。
The waiter was being very careful with the soap so as not to spill it.
服务生拿汤的时候很小心，怕把汤泼出来。
既可指人谨慎细心的，也可指态度、批评方式等经过仔细考虑的，目的在于避开危险或风险。
He's a cautious driver.
他开车很小心。
All sides have expressed cautious optimism about the announcement.
与会各方都对这项通告表示谨慎乐观。
The government has taken a cautious approach to the crisis.
该政府采取了谨慎的态度处理危机。
相关例句：
You have to be careful what you say on telly
在电视上说话时你必须很谨慎。
What we now know about the disease was learned by careful study of diseased organs.
我们目前对该疾病的认识是通过对病变器官的仔细研究得来的。
He was always careful to avoid embarrassment.
他总是小心谨慎地避免尴尬。
We had to be very careful not to be seen
我们得小心翼翼，不能被发现。
It is important, I think, for everyone to be careful about claiming victory.
我想，每个人宣布胜利时都应该慎重。
If it's lost, it's lost. Just be more careful from now on.
丢了就丢了吧，以后小心点。