The UN will have to work hard to stop history from repeating itself.
联合国必须努力工作以阻止历史重演。
我发现很难停下来。
But with a customer like this it's hard to know where to stop!
但是，若是遇到卷毛犬这样的顾客，很难知道在哪里结束耶！
Even checking email can become a compulsive behavior that's hard to stop.
甚至查收电子邮件也能变成一种难以抑制的强迫行为。
Why is it so hard to stop climate change?
Whyisitsohard tostopclimate change ？停止气候变化为什么这么难？
If not, stop and meet some of these other people in your school and say thank you to them for their hard work.
如果还没有，那就停下你手边的事去见见这些人，对他们说声谢谢，感谢他们所付出的辛勤劳动。
"It's very hard to convince people to stop consumption," he says.
他说道：“要说服人们停止消耗是很难的一件事。”
If that's the case, I suggest you stop yourself and think long and hard about why you feel the need to do that.
如果那样的话，我建议你赶快好好反省一下，认真想想为什么你会觉得需要那么去做。
However, it is hard to stop when you get started.
然而，你一旦开始就很难再停下来了。
The hard truth is that the buck of development should stop with designers .
残酷的事实就是：开发进度可能会因设计师而停滞不前。
But once firms start to use them, it is hard to stop.
可是一旦公司决定降价促销就很难停下来。
We don’t know how hard it is to stop thinking until we try.
如果不去尝试，我们不会知道要停止胡思乱想有多难。
They did stop the fire, after a hard battle of several hours.
消防队经过好几个小时的奋力扑救，总算扑灭了火。
"Messi is a great player and is really hard to stop," Vidic commented.
“梅西是一名伟大的选手，他很难被防住。”维迪奇说。
Once started, the process is hard to stop.
当这种恶性循环开始后，这进程就很难停下来。
Once you start, it's hard to stop.
一旦开始，你很难停下。
停止辛苦的工作。
if you catch yourself working hard and loving every minute of it, don’t stop.
要是你发现自己工作辛苦却很享受，那千万别停下来。
It is hard to stop when you are seeing instant results.
通常，你最终不止做5分钟，因为当你见到即时成效时就很难再停下来。
Once you get your momentum, it will be hard to stop it!
一旦你把你的发展势头，这将是难以阻挡的！
No matter how hard you work, you cannot stop getting old.
无论多么辛苦工作，都无法阻止自己变老。
I understand that it may be hard to do it. But I'm confident, I believe I can do it well. So who is also unable to stop.
我明白这也许很难做到。但是我自信，我相信自己能出色地完成这件事。所以谁也没有能力去阻止。
However hard the situation is, I will never stop running!
不管处境何等困难，我永远不会停止奔跑！
After birth, it's hard for the baby to stop putting out extra insulin.
在出生后，婴儿很难停止继续分泌过量的胰岛素。
If you really hard, can be considered to stop working for some time.
如果你确实辛苦，可以考虑停止工作一段时间。
If you really hard, can be considered to stop working for some time.
如果你确实辛苦，可以考虑停止工作一段时间。
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