First, she says, it must address the more difficult question of when a person can really be said to be dead.
首先，必须对何时可以说一个人真正地死亡提出更加困难的问题。
Quantum mechanics, which describes in subatomic detail a shadowy world in which cats can be simultaneously alive and dead, is notoriously difficult to grasp.
量子力学是在亚原子的层面上描述一个朦胧的世界，在这个世界中猫可以同时活着和死去，这可是出了名的难以把握。
"I recognize that when they are my age, it'll be difficult to find a 'dead-tree book,'" he added.
“我意识到等她们到了我的年纪，就很难再看到纸质书了，”他补充到。
Milo: no, no, just difficult. I've spent my whole life studying dead languages. It's not gibberish to me.
麦洛：不，只是很难。我花了毕生精力来学习失传的语言，这对我来说不是胡言乱语。
But in practical measurement, it is very difficult to make no dead time sample due to the counter's dead time.
但实际测量时由于计数器的死区时间，使得无间隙采样十分困难。
Rescue workers also stopped to honor the dead, a pause in a difficult but enormous relief effort as the hopes of finding new survivors faded.
搜救人员也参与了默哀。在这项困难重重但全力以赴的搜救工作中，这是唯一的一次暂停。但是现在搜寻到生还者的希望已经越来越小了。
Sampling of the plants was rather difficult and I found many shells of dead snails inside the mud.
采集crispatula var。 balansa样本有点困难，在泥里面我发现了很多死蜗牛壳。
However, predictions are a difficult thing, and according to Sir John Maynard Keynes, "the long run is a misleading guide to current affairs. In the long run we are all dead."
但是预测是件困难的事情，按照凯恩斯爵士的话说，那个时候“我们都翘辫子了”。
It reduces the construction difficult, releases the dead load of pulling bar and steel suspension box and saves material.
降低了施工难度，又减轻了拉杆及钢吊箱的自重，节约材料。
'I can't imagine anything more difficult,' she said, noting that China has just observed its annual holiday to commemorate the dead.
高老师说：我想象不出有比这更难的事了，她说中国刚刚过了悼念死者的清明节。
The active and dead bentonite contents in green sand system have great effect on the sand properties, but it is very difficult to measure them in actual shop.
型砂系统中的有效膨润土和失效膨润土含量对其性能有很大影响，而生产中对这两个参数的检测比较困难。
The active and dead bentonite contents in green sand system have great effect on the sand properties, but it is very difficult to measure them in actual shop.
型砂系统中的有效膨润土和失效膨润土含量对其性能有很大影响，而生产中对这两个参数的检测比较困难。
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