| 1. | The chemical beds are provided in duplicate . 化学垫是成对设置的。 |
| 2. | Folds commonly show a pairing of crests and troughs . 褶皱通常显示出成对的脊与糟。 |
| 3. | The guests came in couples . 客人们成双成对地来了。 |
| 4. | Poles always exist in pairs . 磁极总是成对存在的。 |
| 5. | After dinner the boys and girls paired off and went to dance . 会餐后,男女青年们成双成对地去跳舞。 |
| 6. | The crusade for sexual morality is turning into a witch-hunt . 捍卫性道德的运动正在转化成对持异议人士的迫害。 |
| 7. | As the couples closed upon him he expressed his congratulations . 当那些成双成对的人走近他时,他向他们表示了祝贺。 |
| 8. | The transverse fibres or commissure unite the two ganglia of a pair . 横行的纤维即接索则把成对的两个神经节连在一起。 |
| 9. | Values were derived from the duplicate 12 x 3-in. specimen compliances. 该值是由成对的12英寸X3英寸试样的柔度得来的。 |
| 10. | These atoms recombine in pairs during the night to form molecules of oxygen gas . 在夜间,这些氧原子再成对地结合成氧气分子。 |