[usually before noun] happening or produced immediately

立刻的，马上的;

an instant success

即获成功

a system that provides instant access to client information

能立即查到顾客信息的系统

The women took an instant dislike to one another.

这些女人一见面就彼此厌恶。

The programme brought an instant response.

节目引起即时回应。

[only before noun] instant food, coffee etc is in the form of powder and prepared by adding hot water

〔食物、咖啡等〕即食的，调制方便的:

instant coffee

速溶咖啡

instant soup

方便汤

[usually singular] a moment

片刻，顷刻:

She caught his eye for an instant .

她刹那间便吸引了他的目光。

When the rain started, the crowd vanished in an instant (=immediately) .

下雨了，人群立刻散尽。

an instant of panic

片刻的恐慌

She stepped towards the door and in that very same instant, the doorbell rang.

她走向门口，就在此时门铃响了。

the instant (that), as soon as something happens

一…（就…）:

The instant I saw him, I knew he was the man from the restaurant.

我一看到他就认出他是饭店里的那个人。

Jen burst out laughing the instant she walked in.

她一走进来，珍就大笑起来。

this instant, [spoken] used when telling someone, especially a child, to do something immediately

立即，现在就〔尤用于催促小孩〕;

Come here this instant!

立刻过来！