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1·He isn't much to look at: a blue jay-size fellow with plain, olive-drab feathers and a single streak of orange on his head.

他相貌平平：个头跟蓝松鸦差不多，深绿褐色的羽毛，头上有橙色的条纹。

2·On another day we met a snapping turtle in his primordial olive drab armor.

还有一天我们在路上看到了一只鳄龟，这只乌龟一袭原始的草绿色盔甲。

3·He was an Air Force captain, and his blue uniform stood out amid our Army olive drab and cadet gray.

他是一名空军上尉，他那蓝色的制服在我们陆军的草绿色制服和暗灰色制服中间格外显眼。

4·It remains to be seen whether olive growers will be happy that the color previously associated with their product is now called drab; or whether drabs or the producers of drab will mount a protest.

橄榄种植者是否会对以前与他们的产品相关联的颜色现在被成为土绿色感到满意，或者斜纹布的生产商是否会提出抗议，还需拭目以待。