hard to pin down的意思|示意

It is hard to pin down what has been causing honeybees to vanish.

很难确定是什么原因使蜜蜂突然消失。

Death estimates are hard to pin down - initial reports placed the toll at nearly 700,000, but those have since been revised down to some 250,000.

死亡人数很难确认，初始报告称死亡人数在70万，但是随后死亡人数被重新修改成25万人。

It's hard to pin down exactly when chocolate was born, but it's clear that it was cherished from the start.

我们很难确定巧克力诞生的确切年代，但有一点是很明确的，那就是自诞生之初，巧克力就一直备受珍爱。

Precise figures are hard to pin down because publication planning is widely dispersed and is only beginning to be recognized as something like a discrete profession.

由于选题策划人员分布广泛、离散性强，所以很难给出一个精确的在行从业数字。

Mr Obama's views are hard to pin down.

奥巴马先生的观点则很难确定。

Some expect Apple and Microsoft to Sue Google. Yet this is unlikely, because the online giant will be hard to pin down.

有些人期待苹果和微软起诉谷歌，然而这是不太可能的事情，因为谷歌这个网络巨人是很难被扳倒的。