The villagers were forced to use oil lamps, which are not only expensive but also dangerous because of the harmful gases they produce.
村民们被迫使用油灯，油灯不仅昂贵，而且它们所产生的有害气体十分危险。
Davida Herzl, Aclima's boss, says they have revealed pollution highs on days when San Francisco's transit workers went on strike and the city's inhabitants were forced to use their cars.
Aclima 的老板达维达·赫茨尔表示，他们发现，污染值的高峰期正是旧金山的运输工人罢工而城市居民不得不使用私家车的时候。
Winemakers who still use cork but wish to keep production costs from rising will be forced to reconsider plastic stoppers.
那些仍在使用软木塞，但希望避免生产成本上升的酿酒师，将被迫重新考虑塑料塞子。
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