hardhead

核心释义

A practical or hardheaded person.

1. 1.

   务实或头脑清醒的人。

   One who is practical or hardheaded.

2. 2.

   一种棕色潜水鸭,澳洲硬头鸭(Aythya australis),原产于澳大利亚。

   A brown diving duck, Aythya australis, native to Australia.

3. 3.

   石首鱼科(Sciaenidae)的某些海鱼。

   Any of certain saltwater sciaenid (Sciaenidae) fishes.

4. 4.

   加利福尼亚淡水中的Mylopharodon conocephalus鱼。

   Mylopharodon conocephalus of fresh waters in California.

5. 5.

   矢车菊属(Centaurea)中的或曾归入该属的几种杂草,尤其是俄罗斯矢车菊(Acroptilon repens)。

   Any of several weeds in or formerly classified in the genus Centaurea, especially Russian knapweed (Acroptilon repens).

6. 6.

   冶炼过程中未能熔化的残余矿石。

   Residual ore that failed to melt during a smelting process.

澳洲潜鸭；石首鱼科鱼类；加州硬头鱼；矢车菊属杂草（尤指顶羽菊）；未熔化的残留矿石