noun 下载 🔗分享 环, 圆环 A ring- or donut-shaped area or structure. Examples : "The dartboard featured a red annulus worth double points. " 飞镖靶上有一个红色的环状区域，击中它可以获得双倍积分。 area part structure anatomy medicine biology 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 圆环，环形区域 The region in a plane between two concentric circles of different radii. Examples : "The target around the bullseye had an annulus of blue paint. " 靶子中心圆的周围有一圈蓝色的环形区域。 math area 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 环面，环状区域。 Any topological space homeomorphic to the region in a plane between two concentric circles of different radius. Examples : "The donut's shape, with its central hole, is an example of an annulus. " 甜甜圈的形状，因为中间有个孔，就是一个环面/环状区域的例子。 math space 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 日环，光环 The ring of the sun not covered by the moon in an annular solar eclipse. Examples : "During the annular solar eclipse, a bright annulus of sunlight remained visible around the dark moon. " 在日环食期间，黑暗的月亮周围仍然可以看到一圈明亮的光环。 astronomy space science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 环带 Structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying. Examples : "The science student observed how the annulus on the fern's sporangium dried and snapped back, scattering spores into the air. " 那个理科生观察了蕨类植物孢子囊上的环带如何因干燥而弯曲弹开，从而将孢子散播到空气中。 biology plant structure part 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 菌环 The membranous remnants of a partial veil which leaves a ring on the stem of a mushroom. Examples : "The young mushroom had a prominent annulus, a delicate ring around its stem, showing where the cap had once been connected. " 这朵幼嫩的蘑菇有一个清晰的菌环，那是环绕着菌柄的一圈薄薄的环状物，表明了菌盖曾经连接的位置。 organism plant biology part 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 环空，环状空间。 (oil and gas production) The space contained between the centre well bore and any external tubing. Sometimes used for separated gas flow. Examples : "During the well test, engineers monitored the pressure in the annulus to ensure no gas was leaking from the production tubing. " 在井测试期间，工程师们监测环空内的压力，以确保生产油管没有气体泄漏。 technical industry energy 与AI对话词汇游戏阅读练习
