許多大城市汽車多，排放大量廢氣，污染問(wèn)題日益嚴(yán)重。
Waste gases from automobiles account for the ever increasing problems of pollution in many big cities.
許多大公司和研究機(jī)構(gòu)在基于SAN網(wǎng)絡(luò)協(xié)議的存儲(chǔ)管理系統(tǒng)方面進(jìn)行了大量的研究工作，并推出了一些商業(yè)化的系統(tǒng)。
Many foreign large corporations and research organizations have done a lot of research work in storage managing system based SAN.
美力行公司曾為許多大型建筑提供了大量的各種類型規(guī)格的點(diǎn)式幕墻配件。
Meilihang Company has ever provided large buildings with large amount of point-style curtain wall parts of various kinds and specifications.