1.Multiple witnesses saw a smoke trail behind the missile as it rushed toward the helicopter.
许多目击者看到当导弹飞向直升机时，身后拖着一股浓烟。
2.We trail behind basketball and football, but it's a gauge that there's awareness.
虽然我们落后于篮球和足球，但是，确实有证据表明，中国人对棒球是有一定了解的。
3.When emperor penguins glide through the water, tiny air bubbles trail behind. On land, they are much less graceful.
这是企鹅们滑入水中的一刻，身后带着一串长长的气泡。在陆地上，他们可远没有这么优雅。
4.A contrail is the visible vapor trail behind airplanes or rockets traveling at high altitudes.
这团痕迹可能是飞机或火箭飞上高空后留下的航迹云。
5.We must act with so rapid and resistless a purpose in one direction, that our vices will necessarily trail behind.
我们必须飞速行动意志坚定奔向一个目标，这样我们的邪恶只好无奈地被拖在了身后。
6.He resembled a deer, that throws one ear back upon the trail behind, and one ear forward, to know what is ahead.
他就象一头鹿一样，一只耳朵撩到后面，另一只耳朵则向前伸着探寻着什么。