A topic-based approach can be hard to assess in schools with a typical spread of ability.
在以典型的能力多元化为特征的学校里很难评估一种基于话题的教学方法。
Food safety is another problem: it can be hard to know where the food comes from.
食品安全是另外一个问题：很难知道食品来源。
We form the good habit, which would be hard to break even if we wanted to break it.
我们形成了好习惯，即使我们想要摒弃它也很难。
I do get real speaking roles, but work can be hard to come by if you're not a popular star.
我的确拿到了有台词的角色，但如果不是人气明星，可能很难拿到这份工作。
It is also the key to understanding the thoughts and feelings that common people have, which may be hard to express.
它也是理解普通人难以表达的想法和感受的关键。
If the sea animals eat them by mistake, the rubbish will be hard to digest and stay in their stomachs forever.
如果海洋动物不小心吃了它们，垃圾很难被它们消化，会永远留在它们的胃里。
With such busy lives, it can be hard to try and find the time to work out.
在如此忙碌的生活中，很难找到时间去锻炼。
Touch screen may also be hard to use for people who is not familiar with computers.
对于不熟悉电脑的人来说，触摸屏可能也很难使用。
Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger.
童年的饮食模式在我们成年后很难打破，这也许意味那些有着抑郁的母亲的孩子们最后会早逝。
At the back, students probably won't speak much, but in big classrooms, it can be hard to see the board and hear what the teacher is saying.
坐在后排的学生可能不会讲太多，但在大教室里，可能很难看到黑板，也很难听到老师在说什么。
It can be hard to identify which parcels are carrying crucial items such as Social Security checks, but USPS and UPS try their best to prioritize sensitive material.
虽然很难辨别哪些包裹里装的是社会保障支票等重要物品，但美国邮政（USPS）和联合包裹服务公司（UPS）会尽其所能优先处理敏感材料。
"Very well," he thought, "let them bury it there; it won't be hard to find."
“很好，”他想，“让他们把它埋在那儿吧。这并不难找。”
Won't it be hard to change my eating habits?
改变吃的习惯会不会很难呢？
Exceptions: it would be hard to recover from segfaults.
异常：很难从segfaults从恢复。
And the reliability of those reviews can be hard to gauge.
同时，这些评测意见的可靠性也难以判断。
It would be hard to scrap elections to the parliament now.
如今已很难废弃对议会的一系列选举。
It's going to be hard to persuade farmers away from ethanol.
要想说服农场主远离玉米乙醇行业是相当困难的。
Making IAEA standards compulsory everywhere may be hard to achieve.
在世界范围内强制执行iaea的标准不太可能实现。
Empirically it seems to be hard to start a startup with just one founder.
从经验上来说，只有一个创始人的公司往往很难。
But that stance would be hard to reconcile with Mr Miliband's softer views.
但是那样的强硬立场很难和米利班德的柔和意见达成一致。
It would be hard to devise a more wasteful, damaging, unsustainable system.
现在要想出一个更浪费的，更有破坏性的，更不持续的机制是很难的。
It would be hard to make money with 16 engineers working on every component.
如果每个零部件都需要16个工程师，我们很难盈利。
Without enough sleep, it may be hard to be active or to make good food choices.
如果睡眠不足，孩子们很难活跃也很难有个好胃口。
And it can be hard to tell exactly what message a city sends without living there.
除非你住在那里，否则要辨别出城市到底发出什么样的消息很难。
Even the governor admits the bill is too broadly drawn and will be hard to enforce.
即便是这个州长也说这个法案的牵涉面太广，很难执行。
Even if you haven't used the library, the code shouldn't be hard to understand.
即使您还没有使用过这个程序库，这段代码也不难理解。
He said it would be hard to be part of Mr Obama's team but not "110% with the team".
他说如果不和奥巴马先生的团队高度一致(注：110%也是虚指)很难成为这个团队的一员。
Mr Simsek acknowledges a shortfall in domestic savings that will be hard to correct.
西姆西可先生承认国内储蓄的短缺将是一个难以纠正的问题。
Since food comes in a variety of colours, a good palette can often be hard to choose.
由于食品的颜色多种多样，好的配色方案常常难以选定。
With a few exceptions, an oral agreement is enforceable but will often be hard to prove.
尽管存在少数特例，但一般情况下，口头协议虽然具备法律效力但往往难以证实。
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