Definition: a very short period of time Level: B1
你有空看一下这封邮件吗？
Do you have a ___second to look at this email?
下载将在几秒钟后完成。
The download will be ready in a few ___seconds.
我马上就到——只是需要找到我的钥匙。
I'll be there in a ___second — just need to find my keys.
