不锈钢是铁和铬的合金。

Stainless steel is an ___alloy of iron and chromium.

工程师们将铜和锌合金化，以制造出更坚固的黄铜。

Engineers ___alloyed copper with zinc to create stronger brass.

她的成功被失败的恐惧所冲淡。

Her success was ___alloyed by the fear of failure.