The results showed that grazing restrained the growth of annual gramineae weeds and perennial gramineae grass, but accelerated the growth of white clover and noxious plants.
结果表明，放牧能明显抑制一年生禾本科杂草及播种多年生禾本科牧草的生长，但对白三叶和草地有害植物的生长都有促进作用。
Chinese cities are notorious for noxious air blamed on emissions from older cars and trucks, coal-fired power plants and factories.
众所周知，中国城市的空气污染可归咎为旧型汽车、卡车、燃煤电厂和工厂的排放。
The noxious hot - weighty gas subsiding to ground will be harm to human and plants.
有毒热重气体沉降到地面会对人和动植物造成危害。
Native plants are also better for the environment than plants from other regions. Plants transported from other regions may become a noxious weed in desert climates and choke out native plants.
而且土生土长的植物比外来物种更适合在花园中栽培，外来的物种很可能成为本地物种的天敌或竞争者。
If leak accidents once occur in chemical plants, a great lot of noxious chemical will be discharged to the environment, and it causes serious environmental pollution.
化工厂一旦发生突发泄漏事故，往往会使有毒化学品大量外泄，造成严重的的环境污染。
The culprits are the ever-present coal-fired power plants and giant heavy-industry complexes that fuel the country's growth, and more and more the noxious emissions of automobiles.
而这一切环境后果的罪魁祸首却正是推动中国经济获得快速增长的烧煤的火电厂和重工业厂房，以及汽车所排放出越来越多的废气。
The culprits are the ever-present coal-fired power plants and giant heavy-industry complexes that fuel the country's growth, and more and more the noxious emissions of automobiles.
而这一切环境后果的罪魁祸首却正是推动中国经济获得快速增长的烧煤的火电厂和重工业厂房，以及汽车所排放出越来越多的废气。
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