harden
/ˈhɑːdən/verb
1- make or become hard or harder（使）变硬（或变得更硬）：
no obj. wait for the glue to harden等胶水干
with obj. bricks which seem to have been hardened by firing.像似烧制变硬了的砖头。
1.1
- make or become more severe and less sympathetic使（或变得）冷酷无情：
with obj. she hardened her heart.她硬起心肠。
1.2
- make or become tougher and more clearly defined变明确：
no obj. suspicion hardened into certainty.怀疑得到了证实。
1.3
- no obj.(of prices of shares, commodities, etc.) rise and remain steady at a higher level（股票、商品价格等）升水（上涨并保持高价位）。
短语
hardening of the arteries
- another term for ARTERIOSCLEROSIS.
派生词
hardener
noun短语动词
harden something off
- inure a plant to cold by gradually increasing its exposure to it使（植物）提高抗寒能力。