在考研中，"against"可以翻译为 “反对”或 “对抗”，具体翻译取决于上下文。以下是一些常见搭配和例句：

反对

She spoke against the proposal at the meeting.

They are against the plan to build a new highway.

对抗

The team worked against the clock to complete the project.

The athlete trained against his own record.

与...相反

The weather was against us； it rained all day.

His arguments were against common sense.

以...为背景

The painting was set against a backdrop of a stormy sea.

紧靠

The book was lying against the wall.

根据这些例句和搭配，你可以根据具体的语境选择合适的翻译。在考研英语中，"against"的用法较为灵活，既可以表示反对，也可以表示对抗或其他含义。因此，理解其具体用法和搭配是至关重要的。