adv. 在后地 prep. 在...背后
Although each culture has their own specific style and approach to music, you will find that the purposes behind music are very similar across the board.
四级 · CET-4 2026年6月 第2套
How accurate DNA tests are relies greatly upon the kind of test being taken, on the specific question you ask, and on how complex the genetics behind a trait (特征) is.
四级 · CET-4 2025年12月 第3套
But now, new research has found the cause and researchers may have come up with a solution for this frustrating traffic pattern: maintaining equal spacing between cars on the road, rather than driving so closely behind another vehicle that a collision (碰撞) is likely if that vehicle brakes suddenly.
四级 · CET-4 2025年6月 第3套
A phantom jam begins when a car in dense traffic slows down even slightly, which causes the car behind that vehicle to slow even more — and the slowing action spreads backward through the lane of traffic like a wave, getting worse the farther it spreads, Eventually, the cars far behind are forced to stop completely or risk hitting the slower vehicles ahead — and so the traffic grinds to a halt over nothing, Horn said.
四级 · CET-4 2025年6月 第3套
E) Horn has been working on the problem of phantom traffic jams for years, and he has come up with a solution: By splitting the difference between the cars in front and the cars behind, the spacing of cars in a stream of traffic can act as a damper (抑制) on phantom traffic jams.
四级 · CET-4 2025年6月 第3套