This often proves difficult and can take a long time so I will ring a bell so that everyone knows it's time to eat! Hopefully this will speed things up a bit.

事实证明这很困难并可能需要很长时间，所以我会提醒每个人，是时候吃东西了！希望能加快速度。

youdao

So they know the distance the neutrinos travel, they know how long it takes them, and they can therefore measure the speed.

所以他们知道中微子传播的距离，他们知道中微子花了多长的时间在路上，因此他们可以测量速度。

youdao

One part of the program is designed to lie dormant for long periods, then speed up the machines so that the spinning rotors in the centrifuges wobble and then destroy themselves.

程序的一部分设计来作长期潜伏，然后给机器加速，使离心机旋转装置产生振动自毁。

youdao

And one that is moving continues to move at an unchanging speed, so long as no outside force influences it.

VOA: special.2011.06.01

Put the stations far apart from one another so that trains can cruise at maximum speed for a long time.

FORBES: Yglesias On The New Transit Funding Formula

By the time the 1966 World Cup came around he was a pale imitation of the real Garrincha, a long-term knee injury enough to curb the electric bursts of speed that had once made him so destructive.

BBC: By Jonathan Stevenson