| 单词 | subtended |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔segment〕The area bounded by a chord and the arc of a curve subtended by the chord.弓形，扇形：由弦正对的弦和弧线的弧所成的区域美国传统〔spikelet〕A small or secondary spike, characteristic of grasses and sedges, having a varying number of reduced flowers each subtended by one or two scalelike bracts.小穗，小穗状花序：禾草或蓑衣草所特有的一种小的或次级的穗，具有数目不等的由一至二片鳞状苞片衬托的渐少的小花美国传统 |
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