This is a very formal noun, and you almost never see it standing alone. The shape you will meet is in pursuance of — while you are carrying something out, or in order to do it.

This這個字 is a very formal noun是個非常正式的名詞, and you almost never see it standing alone而且你幾乎不會看到它單獨出現。The shape you will meet你會遇到的形式 is in pursuance of是「in pursuance of」——while you are carrying something out意思是「在執行某件事的過程中」, or in order to do it或「為了要做這件事」。

In pursuance of her duties, she checked every file.

In pursuance of her duties為了履行她的職責, she checked every file她檢查了每一份檔案。

In office and legal English it can mean 'as we follow / carry out' a contract, a plan, or a rule. Ordinary people almost never say it; they say while doing, in order to, or to follow.

In office and legal English在公文和法律英文裡 it can mean 'as we follow / carry out'它可以指「按照／執行」 a contract, a plan, or a rule一份合約、一項計畫，或一條規則。Ordinary people一般人 almost never say it幾乎不會這樣說; they say while doing, in order to, or to follow他們會說while doing、in order to，或to follow。

Though actually, some writers put in pursuance of on the page just to sound official, even when while doing would be clearer. If you leave out the in … of frame, the word feels unfinished.

Though actually不過事實上, some writers put in pursuance of on the page有些作者會把「in pursuance of」寫進文章裡 just to sound official只是為了聽起來比較正式, even when while doing would be clearer即使用「while doing」會更清楚。If you leave out the in … of frame如果你少了「in … of」這個框架, the word feels unfinished這個字就會讓人覺得沒說完。