在辐照过程中只有当添加剂存在时才出现后效应.The after effect occurs only if the additive is present during irradiation.使用辐照灭菌能够解决某些棘手的问题.The use of radiation disinfection could solve some sticky problems.辐射的发射强度和辐照度是两个互补的概念.The concepts of ra...
英国于1971年开始使用十进制的1便士和2便士硬币。In 1971, the 1p and 2p decimal coins were introduced in Britain.布赖恩把手插进口袋里，把几枚硬币拨弄得叮当作响。Brian put his hands in his pockets and jingled some change.我向付费电话的投币孔里投了一枚25分硬币。I dropped a quarter into t...
雇主以种族或国籍为由歧视员工是非法的。Discrimination by employers on the grounds of race and nationality was illegal.他们当时知道歧视现象仍然存在，但是宁愿装聋作哑。They knew that discrimination was going on, but chose to ignore it.他们关注的是公开的歧视，而不是种族主义的一些潜在问题。They...