这些固若金汤的防线，从日本海一直延续的黄海，无法迂回绕过。

Anchored on the Sea of Japan and Yellow Sea, these defense lines cannot be outflanked.

youdao

前两个赛季，联盟中的人都不难发现，马刺和活塞正由最固若金汤的防守阵型向稳健的进攻阵型转变。

The transformation of two of the league's most stubborn defensive teams, the Spurs and Pistons, into credible offensive squads has been difficult to ignore the past two seasons.

youdao

斯科尔斯在比赛开始14分钟之内以一脚精彩射门为红魔确定领先优势，但是固若金汤的后防线也是阻止巴萨前进必不可少的。

A wonderful Paul Scholes strike after 14 minutes gave United the lead, but some valiant defending was needed to stave off Barcelona's challenge late in the game.

youdao

If you multiply her, then you want to have as much depth to fill in behind to close that hole as you can, so that that would make your phalanx more sturdy, because you could take more casualties without breaking, that seems reasonable to me.

如果再多一些,你就需要在后面增加足够的排数,尽可能地填补缺口,这会使你的方阵固若金汤,即使伤亡惨重也不影响阵容的坚固,这在我看来是合理的

耶鲁公开课 - 古希腊历史简介课程节选