1、beneath
在…之下；在…下面
She could see the muscles of his shoulders beneath his T-shirt.
她可以看到他T恤衫下的肩部肌肉。
She found pleasure in sitting beneath the trees.
她喜欢坐在树下。
在…表面之下；在…的背后
emotional strains beneath the surface.
表面之下的情感纠结
Somewhere deep beneath the surface lay a caring character.
在内心深处的某个角落里埋藏着一颗爱心。
不如；比不上；配不上
They decided she was marrying beneath her.
他们认定她要嫁给一个配不上她的人。
Many find themselves having to take jobs far beneath them.
很多人觉得自己在工作上被迫大材小用。
2、tarnish
玷污，败坏，损害(名誉或形象)
The affair could tarnish the reputation of the prime minister.
这一事件可能有损首相的名誉。
His image was tarnished by the savings and loan scandal.
他的形象因为那桩储蓄信贷丑闻而受损。
(使)有污迹;(使)失去光泽;(使)变暗淡
It never rusts or tarnishes.
它从不生锈，也不会失去光泽。
Wear cotton gloves when cleaning silver, because the acid in your skin can tarnish the metal.
清洁银器时要戴上棉手套，因为你皮肤里的酸性物质会使它失去光泽。