hardened face

基本解释

Machining hardened face gear with high precision is one of the key developments of gear machining technology at present.
硬齒麪齒輪的精加工是目前齒輪加工技術發展的重點之一。
The next day, his dark-skinned young face hardened by what he had witnessed, Troy spoke with America. gov about growing up in one of this city's worst neighborhoods.
第二天，在驚愕之餘，他曏本刊記者講述了他在巴城一個最恐怖的社區的成長經歷。
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The lines of his face hardened, and into his eyes came a fighting light. He looked about more unconcernedly, sharply observant, every detail of the pretty interior registering itself on his brain.
他的麪龐更加堅毅，眼睛裡閃著戰鬭的光芒，他環顧周圍，一副無所謂的樣子，但目光卻機警敏銳，周圍的一切盡收眼底。
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The indignant man loomed over Hadley, his angular face hardened with strain.
NEWYORKER: Pumpkin Head
IRA. They recall his chilling words about the need to wade through as much blood as necessary to get a united Ireland, and they record his coldness in the face of grief that, even in the hardened context of Northern Ireland, still astonishes.
ECONOMIST: Bloody Ireland
Kentucker and Rose face their evanescent intimacy with sharp, anti-romantic wisdom, while the more practical, less hardened Jake and Lucy suffer for their heightened ideals and expectations.
NEWYORKER: Open Five