| 词汇 | concavity |
| 释义 | concavity noun [ C or U ] uk/ˌkɒnˈkæv.ə.ti/ us/ˌkɑːnˈkæv.ə.t̬i/ 凹形 the quality of curving in, or an object or surface that curves in The valley looks utterly serene now - a spacious concavity lying between pine-clad peaks. 峡谷是一大片洼地，坐落在松林覆盖的山峦之间，此时显得寂静无声。 There is the slightest hint of concavity that allows the bottle to fit snugly in my grip. 瓶子几无凹处，不容易握住。 See: concave
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