But what happens in myasthenia gravis though?

但是重症肌无力是如何发生的呢？

Finally, a lot of people with myasthenia gravis undergo surgical removal of the thymus.

最终，许多重症肌无力患者会进行胸腺切除术。

The good news is is that treatment has been able to reduce mortality from myasthenia gravis.

好消息是现在的治疗方案可以降低重症肌无力的死亡率。

Myasthenia gravis preferentially affects young women or older men and commonly affects the extraocular muscles leading to eyelid drooping or double vision, but it might affect any skeletal muscle.

年轻女性和老年男性容易患重症肌无力，最常见的症状是眼外肌受累导致复视或眼睑下垂，还会影响其他骨骼肌细胞。

Myasthenia gravis can affect the extraocular muscles, which control movement of the eye as well as the eyelids, so individuals might have diplopia or double vision, as well as ptosis, or drooping eyelids.

重症肌无力能影响眼外肌，而眼外肌控制着眼睛、眼睑的运动，所以患者可能会有复视以及眼睑下垂。

Myasthenia gravis preferentially affects young women in their 20s and 30s and older men in their 60s and 70s, but the cause of this odd " bimodal" distribution of age-of-onset isn't quite clear.

重症肌无力易影响二三十岁的年轻女性和六七十岁的老年男性，但这种奇怪的“双峰”发病年龄分布的原因尚不清楚。

In very rare cases, myasthenia gravis can present as a paraneoplastic syndrome, which means that an underlying cancer like bronchogenic carcinoma or thymic neoplasm (also known as thymoma) generates an immune response which results in generation of autoantibodies.

在极罕见的情况下，重症肌无力会表现出副肿瘤综合征，这意味着潜在的癌症如支气管肺癌、胸腺肿瘤导致免疫应答产生了自身抗体。