患病的英文：
become sick
fall ill

参考例句：

Among the deaths in Vietnam were two sisters not known to have been near infected birds
其中俩名姐妹没有接触过患病的禽类。

Factory-farmed animals are crammed together in unsanitary conditions, where they suffer and are often sick.
工厂化养殖的动物在不干净的环境中进行填鸭式喂养，这种环境让它们饱受痛苦，并且经常患病。

Initial investigation at the first sign of emergence of a new zoonotic disease must focus on practical characteristics
人畜共患病浮现的最初迹象一经觉察后所进行的初步调查研究，必须集中在一些实用特征，

batten disease
贝敦氏症。贝敦氏症是一种致命的基因紊乱，患者多数为儿童。由于基因缺陷造成。贝敦氏症患者大脑不能正常制造出一种清除脑细胞垃圾的生物酶，这些细胞垃圾在人体大脑中越积越多，会杀死正常脑细胞。患者往往会出现失明、不能说话，患病晚期会发生全身瘫痪并最终死亡。

Falling ill or suffering job injuries
(二)患病、负伤

The section of a diseased organ
切除患病器官.

In sickness and in health
无论是患病或健康时

② An increase of diabetic prevalence
2、糖尿病患病增加

Determine baseline range
确定患病人数的正常范围

I have taken the place of the duties of a sick fellow-official.
我接替了一位患病同僚的工作。

become是什么意思：
v. 成为；变得；适合；相称

To become blunt.
变钝，变迟钝

To become inflated.
膨胀变得充了气的。

To become firm or gelatinous; congeal.
凝固凝结或变硬；冻结

sick是什么意思：
n. 病人
adj. 病的，有病的；想呕吐的，恶心的；渴望的
v. 攻击，使狗去咬

It will make you sick.
那会使你生病。

These bones are for the sick.
这些肉骨头是给病人的。

The sick child was hurried to the hospital.
生病的小孩被赶紧送往医院。

fall是什么意思：
v. 落下；倒塌；摔倒；下降；减弱；阵亡
n. 摔倒；下降；秋天；垮台；陷落；瀑布
adj. 秋天的

Sleet is falling.
天上下起了冰雹。

fall into disfavour
失宠失众望

We observed the barometer fall. [The barometer was observed to fall.]
我们看见晴雨表下降。