Some have been associated with being a little bit harder to detect by antibodies.

有些突变可能会难被抗体检测出来。

Black holes are hard to observe due to their nature.

黑洞性质使其很难被观测。

Anything earlier than that, though, was tough to discern.

而早于此前残骸则很难被识别。

The dark-colored road surface makes the youngsters hard to be noticed.

深色路面使得幼鸟们很难被注意。

From being harder to be eaten to making it easier to eat others.

从难被食容易被他人食。

This very famous blooper is one that simply cannot be unseen.

这一处非常有名穿帮实在是很难被忽略。

It employs a steel design that makes it hard to mark with paint.

它采使其很难被涂结构设计。

The chemicals are hard to detect in low concentrations.

这些化学品在低浓度时很难被检测出来。

In a wetland or in dense growth, you are very hard to spot.

在湿地或是灌木丛生树林里，你很难被发现。

You begged us to hire you, said you'd protect us from all the crap everyone is saying.

你求我们雇佣你，说你会保护我们不被那些难听话所伤害。

It takes a long time, and that is not always easy to accept.

这需要很长时间，这通常是很难被接受。

Another unusual thing about Dorian is that it's been hard to track.

Dorian另一个不同寻常之处在于，它很难被追踪。

So we wanted to do a subtle manipulation, a very consciously undetectable manipulation.

我们想做一种微妙操纵，一种非常难被察觉操纵。

It'll be hard for the bully to get to you if you're with your wingmen.

如果你和你伙伴们在一起，你就很难被欺负了。

Why on average are these swings hard to notice in the dairy aisle?

为什么平均来说，这些波动在乳制品货架上很难被注意？

Full-blown climate deniers, on the other hand, are much harder to persuade.

另一方面，完全否认气候变化人则很难被说服。

Second, HbH has very high affinity for oxygen, and doesn't release oxygen to the tissues.

其次，HbH对氧亲和力很高，氧很难被释放给组织利。

Their design took tremendous ingenuity, making them deadly to attackers and immensely difficult to take.

它们设计极具智慧，对进攻者来说很要命，也很难被攻克。

This all makes it harder to restore the area after it's been disrupted.

这一切都使得该地区在被破坏后难恢复。

As a result, the missiles will be harder to find and destroy in the event of a war.

因此，一旦发生战争，导弹将难被找和摧毁。