许多猪没有症状，但另一些则出现急性发热病症，呼吸困难和神经症状，如颤抖，抽搐和肌肉痉挛等。

Many pigs had no symptoms, but others developed acute feverish illness, laboured breathing, and neurological symptoms such as trembling, twitching and muscle spasms.

youdao

许多猪没有症状，但另一些则出现急性发热病症，呼吸困难和神经症状，如颤抖，抽搐和肌肉痉挛等。

Many pigs had no symptoms, but others developed acute feverish illness, laboured breathing, and neurological symptoms such as trembling, twitching and muscle spasms.

youdao