Our scientific research is second to none.我们的科学研究是顶尖的。Her dribbling skills look second to none.她的带球技巧无人能及。As a football player he is second to none.作为一名足球队员,谁都超不过他....
空气 、 水 、 衣服、及昆虫都会成为疾病的传染媒介.Air, water, clothing and insects are all means of infection.这种疾病是通过昆虫媒介传播的.This disease is spread through the agency of insects.艺术可以用作为宣传的媒介.Art may be used as a vehicle for propaganda....