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（表面上）与周围不同的部分
A patch on a surface is a part of it which is different in appearance from the area around it.
例句
...the bald patch on the top of his head...
他头顶上的秃斑
There was a small patch of blue in the grey clouds.
灰色的云团中透出一小片蓝天。
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（种有某种植物或农作物的）小块土地
A patch of land is a small area of land where a particular plant or crop grows.
例句
...a patch of land covered in forest.
一小块林地
...the little vegetable patch in her backyard.
她家后院中的一小块菜地
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补丁；补片
A patch is a piece of material which you use to cover a hole in something.
例句
...jackets with patches on the elbows.
肘部打着补丁的夹克
...trying to fix the flat tire by putting a patch on it.
想打上一块补丁修好漏气的轮胎
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（保护受伤眼睛的）眼罩
A patch is a small piece of material which you wear to cover an injured eye.
例句
She went to the hospital and found him lying down with a patch over his eye.
她去了医院，发现他躺着，一只眼睛戴着眼罩。
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VERB
补缀；修补
If you patch something that has a hole in it, you mend it by fastening a patch over the hole.
例句
He and Walker patched the barn roof...
他和沃克补好了谷仓顶。
One of the mechanics took off the damaged tyre, and took it back to the station to be patched.
其中一个机修工卸下坏轮胎，把它带回维修站修补。
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补丁
A patch is a piece of computer program code written as a temporary solution for dealing with a virus in computer software and distributed by the makers of the original program.
例句
Older machines will need a software patch to be loaded to correct the date.
老些的机器需要下载软件补丁来修改日期。
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PHRASE
一段艰难时期
If you have or go through a bad patch or a rough patch, you have a lot of problems for a time.
例句
His marriage was going through a bad patch...
他的婚姻当时麻烦不断。
The company I work for went through a rough patch.
我所在的公司经历了一段困难时期。
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PHRASE
比不上；远不及
If you say that someone or something is not a patch on another person or thing, you mean that they are not as good as that person or thing.
例句
He's not a patch on the rest of the Cabinet...
他远比不上内阁的其他成员。
Handsome, she thought, but not a patch on Alex.
是帅，她想，不过比亚历克斯差远了。