温室气体的增多加剧了温室效应。

你完全不用刻意去想气质这件事。因为气质就是你自己，你所经历，你所学，你所想的。它就在那里，你想也没有用。

Wehavebeenimportingandexportingallkindsofmetalsandmineralsfor30yearsandhavemanycustomersandfriendsinover80countriesandregions.

Thereissomanyrichpeopleinyourarea,tothemahighpricemeansagoodqualityproduct.

Ifyoucomparethequalityofourgoodwiththatofothercountry,youwillseeourpriceisveryreasonable.