Silk is also used for the safety lines many spiders drag behind them, which save them if they fall.
蛛丝也是许多蜘蛛拖在身后的安全索，能在它们跌落时保住小命。
Since the lower regions of the cable are moving slower than the higher ones, a rising car will lag behind the orbiting anchor, causing a drag on the cable that could destabilize the entire assembly.
由于较低部位的电缆比较高部位的电缆移动慢，上升的电梯箱将落后于转动锚点，这样就会引起一个拖拽并可能进一步破坏整个装置的稳定。
The drag handlers are uninstalled, leaving the original onmousedown handlers behind, ready to start the next drag-and-drop sequence.
这个拖动处理程序将被卸载，只留下最初的 onmousedown 处理程序，准备好开始下一轮的拖放过程。
This is the main drag, the main boulevard, but just behind the first row of buildings-just in the back streets here-you find a completely different world.
这是主要的、最繁华的街道，但在第一排建筑物之后，仅在这里的小巷弄中，你就会看到一个完全不同的世界。
The pressure drag comes from the front of the swimmer exposed to the water and the flow separation behind the swimmer.
压力带来的阻力来自于游泳者的前部对水面以及后部流体分层。
The drag on the sphere was calculated for Reynolds numbers8.9to1000.0, and the shape and length of the wake behind the sphere were investigated.
计算了雷诺数为8.9 ~ 1000.0时圆球绕流受到的阻力，分析尾涡形状及长度随雷诺数的变化规律。
Your products drag for behind theirs.
你们的产品远远赶不上他们的。
It was too heavy for her to carry, and she could see no better way than to tie the end of her shawl to it and drag it behind her like a go-cart.
抬，对她来说太吃力了。这时候她所能想到的最好的办法就是把她披肩的一头绑在它上面，然后像拉车一样拽着它走。
It was too heavy for her to carry, and she could see no better way than to tie the end of her shawl to it and drag it behind her like a go-cart.
抬，对她来说太吃力了。这时候她所能想到的最好的办法就是把她披肩的一头绑在它上面，然后像拉车一样拽着它走。
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