By the light of the moon I could just make out shapes and outlines.
月光下，我只能分辨出物体的轮廓。
《牛津词典》
2
Are the outlines of the carbon cycle really that familiar?
碳循环的轮廓真的是我们所熟悉的那样子么？
3
X-ray examination of thin slabs of rock sometimes reveals the ghostly outlines of tentacles, digestive tracts, and visual organs of a variety of marine creatures.