declivityn.
英 dɪ'klɪvɪtɪ | 美 dɪ'klɪvəti
中文n. 下坡；倾斜
词根词源
declivity (n.)1610s, from French déclivité, from Latin declivitatem (nominative declivitas) "a slope, declivity," from declivis "a sloping downward," from de- "down" (see de-) + clivus "a slope," from PIE *klei-wo-, suffixed form of *klei "to lean" (see lean (v.)).
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