1.
in an unthinking moment
不经心的时候,不小心时
2.
He knocked up against a tree.
他不小心撞在树上。
3.
How could Noah be so careless?
诺亚怎么会这么不小心？
4.
I ran into the telephone pole.
我不小心撞上了电话杆。
5.
He sliced into his finger by accident.
他不小心把手割破了。
6.
I accidently let the cat out of the Bag.
我不小心泄漏秘密。
7.
He kicked over the pail through carelessness.
他不小心把桶踢翻了。
8.
Student C: What a big ambition!
学生丙：决心不小!
9.
Be careful and mindful when dealing with others, but do not be narrow-minded.
为人处事要小心、心，但不要“小心眼”！
10.
My mother couldn't stand me when I was little, and I couldn't stand her.
我小时候，不称妈的心，妈也不称我的心。
11.
Be careful not to capsize the boat.
小心不要把船弄翻。
12.
Take care not to overexert yourselves.
小心不要过分操劳。
13.
(of a person)unlikely to do dangerous things; cautious
（指人）不冒险的,小心的
14.
Be careful not to be dashed with mud.
小心, 不要被泥水溅到。
15.
"Do not be uneasy, you little coward!
“不用担心，你这胆小鬼！
16.
Don't fool with fire or you'll get burned.
不要玩火，小心被烧。
17.
My waistcoat won't meet.
我的背心太小了,扣不上。
18.
There is no need for such caution.
不必如此小心谨慎。