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词汇 plain sailing
词源
plain sailing. In technical nautical language plane sailing means determining a ship’s position on the assumption that the earth is flat and the ship is on a plane; this is a simple, straight- forward method of computing distance. But in the 19th century, the words entered general use as an expression meaning “per- fectly straightforward action, a course of action that there need be no hesitation about.” The word plane came to be spelled plain and has remained that way ever since.
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更新时间:2025/5/1 4:27:21