当下

zài dāng xià nǐ yīng gāi hǎo hǎo xué xí

在当下，你应该好好学习。

In present time, you need to study hard.

shēng huó bù zài bié chù dāng xià jiù shì quán bù

生活不在别处，当下就是全部。

Life is not elsewhere, the present is all.

yī tīng zhè huà wǒ dāng xià jiù lèng zhù le

一听这话，我当下就愣住了。

I was instantly dumbfounded at the remark.

yī tīng zhè huà tā dāng xià jiù jǐng tì qǐ lái le

一听这话，他当下就警惕起来了。

Hearing this, he was instantly on the alert.