这些缺陷导致交通拥堵并浪费驾驶者的时间和汽车燃料，同时导致城镇的交通污染进一步恶化。

This leads to jams and waste drivers' time, vehicle fuel, and to higherlevels of localised pollution in towns and cities than might otherwise bepresent.

youdao

这些缺陷导致交通拥堵并浪费驾驶者的时间和汽车燃料，同时导致城镇的交通污染进一步恶化。

This leads to jams and waste drivers' time, vehicle fuel, and to higher levels of localised pollution in towns and cities than might otherwise be present.

youdao

煤在某些方面有些缺陷，并且不易操作，然而尽管如此它也是廉价、充足、可在美国本土开采的取暖燃料。

Problematic in some ways and difficult to handle, coal is nonetheless a cheap, plentiful, mined-in-America source of heat.

youdao