①A silhouette is the solid dark shape that you see when someone or something has a bright light or pale background behind them.【n.(浅色或强光背景下衬托出的)暗色轮廓，影像,剪影】
②The silhouette of something is the outline that it has, which often helps you to recognize it.【n.形状;外形;轮廓】
①The dark silhouette of the castle ruins stood out boldly against the fading light.
②The shirt's ideal worn loose over leggings or tuck it in for a streamlined silhouette .
Matt Haig的新书 The Midnight Library 也出现了这个表达：
这里再拓展一个固定搭配：in silhouette 呈侧面影像;呈黑色轮廓像 【If you see something in silhouette, you see it as a dark shape with no detail except for the outline.】
Even from behind in silhouette , Billy recognized the figure.
Taylor Swift 的歌 Enchanted 也出现了这个词汇：
do away with
If one person does away with another, the first murders the second. If you do away with yourself, you kill yourself.
A woman whose husband had made several attempts to do away with her.
《经济学人》一篇题为 Terminal value 的文章也出现了这个表达：
bump sb off 也可以表示 “杀死，干掉某人 ”【To bump someone off means to kill them.】
They will probably bump you off anyway!
再回到“do away with ”这个短语，它还有一个意思，可以表示“消除;终止;废除”【To do away with something means to remove it completely or put an end to it.】
The long-range goal must be to do away with nuclear weapons altogether.