All that movement makes it hard for predators to see individuals in a large group.
所有这些运动使得捕食者很难在一个大群体中看到个体。
Heat makes it hard to breathe.
过高的热度导致呼吸困难。
The depth (深度) makes it hard for scientists to find the whale fall.
深度使科学家很难找到鲸鱼坠落的地方。
Industry lobbying makes it hard to get healthy foods.
行业游说使得人们很难获得健康食品。
It makes it hard to disengage and leads to a lot of bleed-over into the family routine.
这很难让人不沉浸其中，也会导致家庭日常受到重大影响。
It makes it hard to disengage, and leads to a lot of bleed-over into the family routine.
这很难不让人沉浸其中，而且大量渗透到家庭日常生活中。
That makes it hard for the immune system to recognise.
这使得免疫系统难以识别他们。
That makes it hard for the immune system to recognise.
这使得免疫系统难以识别它。
This makes it hard fora planet to develop an atmosphere.
因此，行星就很难产生大气层。
A rickety legal system makes it hard to enforce contracts.
繁杂的法律系统很难强制执行合同。
This attitude makes it hard to sell directly to Western consumers.
这种态度使得直接销售给西方消费者更加困难。
Avoid anything that makes it hard for the spider to crawl your site.
避免任何会阻碍爬行器在站点中漫游的东西。
But this makes it hard for the other ECOWAS members to criticise Nigeria.
但是，这使得其他西共体成员很难批评尼日利亚。
"The dust gets in my eyes and it makes it hard to breathe," she says.
“灰尘进入我的眼睛，而且使人呼吸困难。”她说。
That makes it hard to assess its real worth (and deters new entrants).
对于这些电力的实际价值很难评估（并且会阻止新进入者）。
This makes it hard to improve and for instance to become more effective.
这使你很难进步，比如说更加有效率的做事情。
Part of what makes it hard is that she has to think about doing nothing.
这部分里面最难的是，她必须不要去想任何事情。
It’s a no-brainer. But that makes it hard for new games to break through.
这种做法确实不需要花什么脑力，但是却会使新的游戏很难打入市场。
It makes it hard, it makes it stressful, but I find that I work best under stress.
这让工作变得困难、变得有压力，但我发现我在压力下工作得最好。
It wears off when he's not around, but it makes it hard to have realistic schedules.
它不在的时候这种扭曲就渐渐消失，但是制定切实可行的计划依然因此而变得十分困难。
As well as limiting piracy, DRM makes it hard to move music from one device to another.
DRM在限制盗版的同时也加大了音乐文件在设备中传送的难度。
This makes it hard to combine with organic methods (though some researchers are trying).
这样就很难采用有机方法了(尽管研究人士仍在继续尝试)。
This makes it hard for operators to build brand loyalty, let alone sell premium services.
如此一来，运营商就很难让客户建立起品牌忠诚度，更不用说向他们推销额外的收费服务了。
This makes it hard to measure how any individual compound might affect the endocrine system.
这就造成困难，很难衡量任何一种化合物到底会如何影响内分泌系统。
Often, the sheer amount of live data makes it hard to identify the patterns in these events.
通常，巨量的实时数据使得确定这些事件中的模式变得非常困难。
More important, it is stuck in an economic slow lane that makes it hard to repair its finances.
更重要的是，葡萄牙经济增长缓慢，这让它很难改善自己的财务状况。
This approach results in good performance, but makes it hard for intermediaries to process messages.
这种方法产生了良好的性能，但使中介很难处理消息。
That makes it hard to find a boyfriend, since they typically aren't stocked in the supply closet.
这使我很难找到男朋友，因为他们可不像那些摆在壁柜里的茶点食物，可以供你取用。
Individual properties and neighbourhoods differ, which makes it hard to construct accurate hedges.
个别房产与邻近区域并不相同，这使得人们难以建立精确的对冲。
Individual properties and neighbourhoods differ, which makes it hard to construct accurate hedges.
个别房产与邻近区域并不相同，这使得人们难以建立精确的对冲。
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