Something that happens or is done briefly happens or is done for a very short period of time.
He smiled briefly.
他短促地微微一笑。
If you say or write something briefly, you use very few words or give very few details.
There are four basic alternatives; they are described briefly below.
有4种基本选择,简略描述如下。
You can say briefly to indicate that you are about to say something in as few words as possible.
Briefly, no less than nine of our agents have passed information to us.
简言之,至少已经有9位我方的代理商将信息传递给了我们。