high-low lines 高低线
selected high-low lines 选定高低线
low nicotine lines 低烟碱品系
low voltage power lines 低压电力线
low-pressure steam lines 低压蒸汽管道
low frequency spectrum lines 低频线谱
Telegraph lines presented a similar economic challenge-high start-up capital and low marginal operating costs.
电报线路提供了类似的经济挑战——很高的启动资本和很低的边际运营成本。
Many are hit by trains or cars, or electrocuted by low-hanging power lines.
许多大象被火车或汽车所撞,或因低挂电力线路触电。
There were no miso soup lines and the relatively low official unemployment rate often seemed to belie that there was a problem at all.
购买廉价酱汤的长队并没有出现。而且,相对较低的官方失业率经常给人一种根本没有问题存在的假象。
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