As he is a hard edged surface against a flat background it should be fairly easy to select him using the Polygonal Lasso Tool.

因为相对于单一的背景，他有一个边缘分明的外观，所以，使用多边形套索工具选取他是十分容易的。

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The sunlight is white and blinding, throwing hard-edged shadows on the ground.

阳光亮白刺眼，在地上投下轮廓分明的影子。

《柯林斯英汉双解大词典》

When the sun rose the world was radically different. We were in California now: big, bright landscapes with busy skies, hard-edged buildings and palm trees.

当太阳升起的时候，世界全然不同了，我们已经到了加利福尼亚：景色壮阔明亮，天空碧蓝，可以看到硬线条的房屋和棕榈树。

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When Stoke play defensively, it is called hard edged and determined soccer.

FORBES: Berbatov and Fulham - A Perfect Match?

The American style is more, hard edged, page-turning thriller.

WSJ: Peter James: In Hot Pursuit of American Readers

He stood for a confrontational, hard-edged, many people said divisive, even hateful, brand of politics.

NPR: McCain, Obama Battle In Campaign Ads