... old age survivors insurance老年和鳏寡生活保险 old cost老成本 oligopoly少数卖主垄断 ...
双语例句
1
Environmentalists and local governments are increasingly concerned about the toxic hazard posed by old electronic devices and the cost of safely recycling those products.
环保人士和地方政府越来越关注于旧电子设备带来的有毒危害以及安全回收这些产品的成本。
2
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient, but still carry great cost.
变化的建筑法规，不断发展的品味，加上保养这些美丽而老旧的指示牌所需的高昂成本，都让商家们更欢迎 LED 灯，虽然 LED 灯节省能源，但是成本依然很高。