17世纪以前，撇号很少被运用。

Before the seventeenth century the apostrophe was rare.

youdao

这项技术的使用最早出现在20世纪50年代，用于史普尼克3号人造卫星。

The technology was first used on the Sputnik 3 satellite in the 1950s.

youdao

我们明天下午2点在4号线世纪大道站点1号出口碰头。

Let's meet at 2pm tomorrow, at Exit 1 of Century Avenue Station, Line 4.

youdao

“卫星一号”升空利用的技术早在十九世纪末就出现了。

The technology that launched Sputnik probably began in the late nineteenth century.

youdao

“卫星一号”升空利用的技术早在十九世纪末就出现了。

The technology that launched Sputnik probably began in the late nineteenth century.

youdao