| 释义 |
DEFINITIVE EXAMPLES 权威例句〔I-beam〕A steel joist or girder with short flanges and a cross section formed like the letter I.I形金属横梁，工字梁：由短翼缘和一个十字部分做成象字母 I的钢制托梁或主梁美国传统〔concavity〕The state of being curved like the inner surface of a sphere.凹陷：被刻成象球体内表面的样子美国传统〔ivory〕A similar substance forming the tusks or teeth of certain other mammals, such as the walrus.牙齿成分：形成象牙或某些哺乳动物牙齿的类似物质，如海象美国传统〔mushroom〕To swell or spread out into a shape similar to a mushroom.呈菌状扩散：膨胀或者伸展成象蘑菇的形状美国传统 |