unyielding

1. He stood unyielding and unafraid against the enemy.
   他面对敌人，英勇无畏。
2. The unyielding man fiercely pierced the shield in the field.
   那个不屈的人凶猛地刺穿田野里的盾牌。
3. He became more and more unyielding.
   他变得越来越刚强。
4. Something gripped him in an unyielding hold.
   有什么东西死死地把他缠住不放。
5. The mattress was hard and unyielding.
   这床垫很硬，没有弹性。

An Experimental Investigation of Fluid Flow Resulting from the Impact of a Water Drop with an Unyielding Dry SurfaceEarth pressures on unyielding retaining walls of narrow backfill widthMulti-ply support beltA sterically expanded "constrained geometry catalyst"for highly active olefin polymerization and copolymerization: an unyielding co...Exome sequencing identifies the cause of a Mendelian disorderPassivity of a class of sampled-data systems: application to haptic interfacesDynamic interactions between 14-3-3 proteins and phosphoproteins regulate diverse cellular processesThe nerve lesion in the carpal tunnel syndrome.Vision-assisted control for manipulation using virtual fixturesCytokinin signaling networks.