a losing battle

基本解释

Hundreds of Tuareg fighters stood by him as his regime fought a losing battle for survival.
在上校最终败北的生存之战中，几百名柏柏尔族战士站在了他的一方。
This novel describes the final echoes of the newspaper story: dedication and ambition fighting a losing battle against backbiting and cheeseparing, and ending in a largely unlamented closure.
本书描绘了报业传奇的最终回响：奉献精神、雄心壮志注定要败给造谣诽谤、斤斤计较，到头来关门倒闭也无人哀叹。
Some who oppose the unhealthy culture choose to be silent for fear of losing future grant opportunities. Others who want change take the attitude of "wait and see, " rather than risk a losing battle.
一些反对这套不健康文化体系的科研工作者选择了沉默，因为他们害怕未来失去获得科研基金的机会。

Parties now have more than a month to make their case to voters, but the LDP may be fighting a losing battle.
It was a losing battle.
这已注定是一场败仗
耶鲁公开课 - 欧洲文明课程节选
Northern forces were losing a major battle there.

And nations that try to restrict these freedoms are in a losing battle with liberty.
CENTERFORSECURITYPOLICY: Center For Security Policy