| 1. | His forepaws braced a pebble .
它那双前爪紧紧抓住了一块小石子。 |
| 2. | We went on again, picking up shells and pebbles .
我们又往前走去，捡蛤蛎壳和石头子儿。 |
| 3. | Then he squeezed the trigger and the pebble spattered .
他赶快把扳机一扣，啪的一声，石子击了个粉碎。 |
| 4. | The ordinary leader turns pebbles in the road into boulders .
普通的领导人却把路上的鹅卵石变成巨石。 |
| 5. | These may range from coarse silt to sand or pebble size .
这些颗粒的大小变化范围，从粗粉砂级到砂级或细砂级。 |
| 6. | The waves eat into them only when they are charged with sand or pebbles .
只有挟带沙砾和碎石的波浪，才起侵蚀作用。 |
| 7. | These particles range from coarse silt to sand or pebble size .
这些颗粒的大小变化范围是从粗粉砂级到砂级或细砂级。 |
| 8. | They lean on the rail and toss a pebble into the falls, or a leaf .
他们凭着桥栏，把一粒鹅卵石或一片树叶投在瀑布里。 |
| 9. | As a mechanical analogy, we can think of pebbles dislodged from a beach by water waves .
作为一种力学比拟，我们可以想象海滩上被水波移动的卵石。 |
| 10. | They may have used pebbles to calculate, for the word "calculus" means "pebble" .
他们也许是用石子来作计算的，因“calculus”这个字原意是“石子”。 |
