If you use an encrypted communication channel, this isn't a real problem - as long as the channel encryption is solid, no outside party can monitor a message.

如果使用加密的通信通道，那么就可以解决这个问题—只要通道加密非常可靠，外部无法监视消息。

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According to Zeng, many restaurants contract out their kitchen waste collection to private parties, a stable set-up in which there is no room for the entrance of an outside party.

曾炜表示，许多餐饮酒店都将餐厨废油的收购权承包给了专人，收购方和餐饮企业间建立比较稳定的购销关系，外人不得插足。

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However, if you've talked to your roommate and something is still really causing a big disagreement between you and you roommate, you might need to get an outside party involved.

如果你和室友沟通之后，两人之间的分歧依然确实很大，这时你需要引入外部第三方了。

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Webster and his supporters were Tyler's only real strength in the Whig Party outside of Virginia.

VOA: special.2009.02.05

When teachers there contest their ratings, they are observed three more times by an outside party over the course of a year.

WSJ: Teacher Evaluation Deal Reached

But that would require justifying their habits to an outside party.

FORBES: Magazine Article

An outside party can be helpful, adds Friedman.

FORBES: From the Altar to IPO: The Highs and Lows of Married Business Partners