How is “at the expense of” used?

In The Patriot (2000), one line is: “But not at the expense of our cause.”

Which movie is “at the expense of” from?

The clip at the top of this page is from The Patriot (2000).

But not at the expense of our cause.

8 作品で登場 · 1 本目

イディオム

with loss or damage to sb / sth

10 本の映画に登場

at the expense of sb / sth
with loss or damage to sb / sth
He built up the business at the expense of his health.

定義：Oxford Advanced Learner's Dictionary 第 9 版