"I've looked at this picture very often but I'd never really noticed this shadow before," he suddenly said, pointing to a patch of burnt umber near the elbow.
“这张画我看过好多次,但从没注意过这一块阴影。”他突然说,并指出画中手肘处的一块棕色焦痕。
Meanwhile, economists are pointing to the annual adjustments and to bad weather as major factors clouding the picture.
同时,经济学家指出年度调整和恶劣的天气是导致情况不明朗的主要因素。
Let me show you a picture. The rule is if I walk along C with S to my left then the normal vector is pointing up for me.
给你们看张图片,“相容”就是,如果我沿着C走,而且S在左边,法向量就是朝上的。
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