常見(jiàn)例句用作名詞 (n.)We put the cage in one of the field's foci.我們把籠子放在區(qū)域中的一個(gè)焦點(diǎn)処。The earth revolves around the sun in an ellipse with the sun at one of the foci.地球在以太陽(yáng)爲(wèi)焦點(diǎn)的橢圓上圍繞太陽(yáng)公轉(zhuǎn)。 返回 foci