| 1. | His echoing cry woke the mountain valley .
他叫喊的回声震荡着山谷。 |
| 2. | The canyon is famous for producing echoes .
这个峡谷以回声而闻名。 |
| 3. | The return of the echo will elapse longer time .
回声返回所耗的时间越长了。 |
| 4. | The echo of the explosion damped itself in the air .
爆炸的回声还萦回在空中。 |
| 5. | The echo was sent from the cave .
回声是从洞里传出的。 |
| 6. | The bat judges distances by a kind of echo-location .
蝙蝠用一种回声测定法来判断距离。 |
| 7. | The daily echo has a readership of over ten million .
《每日回声报》拥有读者逾一千万人。 |
| 8. | Dolphins also navigates by some kind of echo system .
原来海豚也是借助某种回声系统寻向的。 |
| 9. | In their echoes, there was a tone of unutterable sorrow .
他们波动的回声中带有一种难言的悲哀。 |
| 10. | The empty room echoed .
空屋发出回声。 |
