简单释义：

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prep. 反对；违反；撞；以防

conj. 在…之前

网络 对着；对阵；相反

完整释义：

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un.

1.为…做个准备
2.与…无缘

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例句：

1. And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
   凡不接待你们的，你们离开那城的时候，要把脚上的尘土跺下去，见证他们的不是。

2. Thus saith the LORD, Ye shall not go up, nor fight against your brethren: return every man to his house: for this thing is done of me.
   ‘耶和华如此说：你们不可上去与你们的弟兄争战，各归各家去吧！因为这事出于我。’

3. Do not reveal your tattoos or piercing unless you are sure that the company has no policies against both.
   不要露出纹身或洞眼，除非你确定面试的公司在这方面没有明令禁止。

4. He had asked me if I was a deceiving imp, and he had said I should be a fierce young hound if I joined the hunt against him.
   他早就问过我是不是一个骗人上当的小魔鬼，他还说过，要是我参加那些人来搜捕他，我就是一头凶狠的小猎犬。

5. The dollar's losses also came in tandem with declines in gold, which is often used as hedge against high-risk events.
   今日美元同金价也同步走软，金价通常被投资人作为高风险的对冲资产。

6. His mind hovered for a moment round the doubtful date on the page, and then fetched up with a bump against the Newspeak word doublethink.
   他的思绪萦绕着纸页上那靠不住的日期，脑中忽然冒出一个新话用词：双重思想。

7. Plastic comes from oil, but despite launching a charm offensive against BP, he never did make it out to an oil rig.
   塑料来自石油，但尽管他对英国石油（BP）发起了一轮魅力攻势，却终究未能进入石油钻塔。

8. I'll be curious to see how the Spurs respond tomorrow night against the Heat.
   明晚对热火，不知道他们会打成怎样。