制造商正在研制价格更便宜的新一代数字收音机。Manufacturers are working on a new generation of cheaper digital radios.有3种新产品是以传统的草药为基础研制的。Three of the new products are based on traditional herbal medicines.盼望有一天有人会研制出一种能有效预防疟疾的疫苗。Roll on the da...
I once bought a thingummy out of one of those catalogues.我曾经买过那些目录里的一样东西。General catalogues and special leaflets are being airmailed under separate cover.我公司的目录和商品转页另以航邮寄上.Catalogues of our books will be sent on request....