小心，注意：表示对某事物或行为的警惕，提醒他人在处理某事时要谨慎。
... be careful with 小心；照顾 be careful about 当心，注意 be careful of 小心，注意；当心…，对…仔细 ...
... make friends with... 与。。。交朋友 be careful about 小心，当心 learn about 获得，学习 ...
... be careful with 谨慎的，小心的 be careful about 注意, 关切; 讲究 be careful in 小心 ...
... 11. be careful (not) to do sth 小心(不)做某事 be careful about 注意 be careful with 小心; ...
当心，注意
I think you should be careful about talking of the rebels as heroes.
我认为你还是当心点好，别把叛乱分子说成是英雄。
You should be careful about how to talk with them.
你应该要注意与他们交谈的方式。
Something else they need to be careful about is medicines.
他们还需要注意的是药物。
And be careful about stalagmites you might trip over one on the floor.
VOA : special.2009.12.07
So it's a way of reminding you, I've got to be careful about the types of things that I put in.
因此我这是在提醒你，一定要对输入的东西的类型,多加注意。
计算机科学及编程导论课程节选 : 麻省理工公开课
The message I'm trying to get to here, because I'm running you right up against time, is I have to be careful about what's a primitive step.
我想说的事情是，因为我正在跟大家讲算法时间复杂度，我们需要注意一个基本步骤的定义,如果我可以假设。
计算机科学及编程导论课程节选 : 麻省理工公开课
"First of all, I want everybody here to be careful about what you post on Facebook because in the YouTube age, whatever you do, it will be pulled up again later somewhere in your life.
VOA : special.2009.09.14
Great powers should be careful about starting, but once they start they should be relentless and implacable about winning."
VOA : standard.2010.07.30
The embassy is warning Americans in France to be careful about speaking English on the streets.
In other words, founders should be careful about taking large amounts of VC money.
Brown said he had to be careful about getting rescue teams to the site earlier.