There's a world of difference between an amateur video and a slick Hollywood production.业余制作的录像短片与好莱坞制作精湛的电影作品有天壤之别。An amateur shouldn't play roulette for high stakes.外行不该下大赌注赌轮盘赌....a keen amateur photographer...
Public support is urged to help control rat infestations in Hong Kong.防治虫鼠人员呼吁市民共同努力控制鼠患.These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions.这些猪在自然条件下已受到含有隐...