vanishes例句
When this tensor
vanishes, the space is calleda flat.
当这一张量为零时,空间叫做平直空间.
If the circulation
vanishes at one instant of time, it must vanish for all times.
只要环量在某一瞬间为零, 它就必须永远为零.
With this said, the old man
vanishes out of sight.
老人话一说完, 就忽然不见了.