In theory I'm on call day and night.

理论上，我不分昼夜随叫随到。

《柯林斯英汉双解大词典》

In theory, these machines should last for ten years or more.

从理论上讲，这些机器应能用十年以上。

《牛津词典》

In theory, the buyer could ask the seller to have a test carried out.

在理论上，买方可以要求卖方进行一次产品检测。

《柯林斯英汉双解大词典》

And at least in theory I can make those schools compete against each other for my services."

VOA: special.2010.07.26

And so in theory after just 2 or 3 steps you were in order of magnitude farther along in this counting process than I would be because I'd still be on person literally 3 or 4.

因此从理论上说,经过这样短短的两三个步骤,你们就有了分级次序，比我数数快多了,因为我才数到第三四个人。

哈佛公开课 - 计算机科学课程节选

And inside of each of these cups is a different weight so that in theory all of these cups are different weights.

每个杯子里的东西重量都不同,这样，从理论上看，这些杯子的重量都不同。

哈佛公开课 - 计算机科学课程节选

So a diesel hybrid, in theory, will give you the best of both worlds.

NPR: Hybrids and the 'Halo Effect' of Car Ads

Because in theory, the HOV lanes are flowing more freely than the stop and go traffic.

NPR: Hybrids and the 'Halo Effect' of Car Ads

In theory measles could be eradicated - like smallpox it has no animal host.

BBC: Long shadow cast by MMR scare