措手不及

bì xū zuò hǎo fáng hóng zhǔn bèi gōng zuò yǐ miǎn yǔ jì lái shí cuò shǒu bù jí

必须做好防洪准备工作，以免雨季来时措手不及。

We must be well-prepared for floods, so as not to be caught off guard when the rainy season comes.

ràng dí rén cuò shǒu bù jí

让敌人措手不及

catch the enemy unawares

dǎ tā men gè cuò shǒu bù jí

打他们个措手不及

make a surprise attack on them

gǎn dào cuò shǒu bù jí

感到措手不及

feel surprised

wǒ men dǎ le gè cuò shǒu bù jí yī qiāng méi fàng jiù bǎ tā men shōu shi diào le

我们打了个措手不及，一枪没放就把他们收拾掉了。

Our enemies were caught unprepared and we disposed of them without firing a single shot.

wǒ bèi wèn dào jǐ gè jiào nán de wèn tí yī shí cuò shǒu bù jí

我被问到几个较难的问题，一时措手不及。

I was thrown off-balance by some of the more difficult questions I was asked.