Hardenability
n. 可硬化性, 可淬性\\n[化] 淬透性; 可淬性; 可淬硬性
??? 情景例句
Thanks so much.
非常感謝。
A plant may produce new flowers; man is young but once.
花有重開日，人無再少年。
Before they were replaced by steamships,
在蒸汽船取代帆船之前。