Truth maintenance
[计] 正确性保持
🧩 词语组成解析
🗣️ 情景例句
As a matter of fact,
事实上，
This country is localed in the northern hemisphere.
这个国家位于北半球。
The first question to answer is whether a planet can actually support life.
第一个需要解答的问题是一颗行星是否有能够维持生命的条件。