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- A bright linear echo arises from the atretic tricuspid plane (cured arrow).LA, left atrium.Sp, spine. 明亮的线样回声起源于闭锁的三尖瓣（完全箭头）。
- A bright linear echo arises from the atretic tricuspid plane (curved arrow).LA, left atrium.Sp, spine. 明亮的线样回声起源于闭锁的三尖瓣（完全箭头）。
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
- The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
- His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
- It prevents the other end from hearing an echo of themselves. 该功能可以防止远端听到他们的回声。
- The daily echo have a readership of over ten millions. 《每日回声报》拥有读者逾一千万人。
- Her softening voice chimed in beautifully with the echo of the music. 她柔和的嗓音与乐曲的回声美妙地融为一体。
- The young man is only an echo of his mother's opinions. 那个年轻人只不过是他母亲意见的附和者。
- The Daily Echo has a readership of over ten million. 《每日回声报》拥有读者逾一千万人。
- The return of the echo will elapse longer time. 回声返回所耗的时间越长了。
- She shouted on the mountaintop and listened for the echo. 她在山顶上大声喊着，然后聆听着回声。
- A circuit that needs to use an echo trap if the circuit is used alone. 一种电路，如果单独使用它，则需要使用回波抑制设备。
- A specified arrangement used in ordering. An order need not be linear. 一种在排序中使用的特定排列。排列的次序不必是线性的。
- The ordinate scale is linear in decibels. 纵坐标比例尺以分贝为单位是线性的。
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置
- An echo was returned from the round wall. 从圆形的墙壁反射出回声。
- The echo rebounded from the round wall. 回声从圆形的墙壁上传回。
- Here are linear measures in millimeters. 这是毫米方式的线性量度。
- The valleys echo the sounds of the mountains. 山鸣谷应。
