The gunboat opened fire on the mainland.炮艇朝陆地开炮.Lieutenant Campbell ordered the man at the wheel to steer for the gunboat.坎贝尔上尉命令舵手将船开向炮艇。We bid for the construction of a gunboat.我们投标造一炮艇....
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...