[gǎn jǐn]
lose no time; hasten; run
hasten to explain
赶紧解释
quickly put on the brakes
赶紧刹车
On seeing us, they hastened over.
他们看到我们，赶紧走了过来。
We lost no time in returning to the headquarters.
我们赶紧回到指挥部。
If you find anything unusual, report at once.
发现情况，赶紧报告。