您要查找的是不是：
- The manager is a heavy drinker. It's going to be hard to keep up with him. 经理酒量很大，要比上他可得辛苦了。
- Make it Fun - If youdon't enjoy yourself at the gym, it is going to be hard to keep ita habit. 找点乐趣。要是在体育锻炼里的得不到乐趣，坚持体育锻炼就会有点困难。
- If the ink sinks in it'll be hard to remove it. 如果墨水渗入，要除去就很困难。
- It was hard to keep a straight face while I answered their questions. 回答他们的问题时，真叫我忍俊不禁。
- If the ink sinks in, it'll be hard to remove the spot from the cloth. 如果墨水渗入布料，就很难把污迹洗去。
- The frozen snow was so slippery that it was hard to keep one's feet. 冰雪溜滑, 人们很难站稳。
- As your project grows, it will be harder to keep track of the various plug-in dependencies. 随着您的项目的进展,保持跟踪多个插件相关性将变得更加困难。
- It was hard to keep the store going during the depression,but Jack held on and at last met with success. 在萧条期间商店难于维持，不过杰克不顾困难继续经营，终于成功了。
- Those rebellious teenagers are hard to control. 那些反叛的青少年很难管教。
- It was hard to keep the store going during the depression, but Jack held on and at last met with success. 在萧条期间商店难于维持，不过杰克不顾困难继续经营，终于成功了。
- It was hard to keep the little boat from veering from the course that we wanted to take. 要保持小船不偏离我们想走的航向是很难的。
- It would be hard to give a definite reply. 扯不清楚。
- Suspecting he was drunk, the rickshaw puller turned his head and asked him to keep still, for it was hard to pull the rickshaw. 洋车夫疑心他醉了，回头叫他别动，车不好拉。
- Jobs are hard to come by these days. 近来 很难找到工作。
- A verier humbug would be hard to meet. 比这个更坏的骗子恐怕没有了。
- Avoid glass desktops. They glare and are hard to keep clean. You don't need to spend valuable time wiping off fingerprints. 尽量避免使用玻璃桌子。它们比较耀眼并且很难保持干净。你不需要用很多有价值的时光来擦除手指印。
- Real curios are hard to come by. 真正的古玩很难弄到手。
- Such bubbles are hard to keep stable for long periods because they naturally gobble up smaller bubbles and grow in size. 这些气泡很难长时期地保持稳定，因它们会自然地吞食较小的气泡，然后变大。
- Katherine: We laughed our way through that Charlie's Angel's spoof. It was hard to keep a straight face. It felt like an office party. 我们在拍查理天使的搞笑版时一直笑个不停。真的很难板起脸孔。感觉就像置身于办公室派对里。
- With an hour's start he will be hard to catch. 已经开始一个小时了，他很难被赶超。
