1.Without China's active participation, any attempts to immunise Afghanistan against terrorism would be futile.
没有中国的积极参与，任何试图使阿富汗免受恐怖主义侵扰的努力，都是徒劳的。
2.Even during the worst of times, efficient persification and portfolio construction can immunise investors from downturns.
即便在最糟糕的时期，有效的多样化和投资组合构建可以使投资者免受市场低迷的影响。
3.Unions can immunise themselves by following elaborate procedures, but officials complain that doing so is hellishly bureaucratic.
工会可以通过精心编制的程序使自己开脱无罪，但是官员怨声载道称这样做实属是令人发指的徇私舞弊之举。
4.Despite a massive research effort, no vaccine to immunise against HIV has yet been developed.
尽管人们做了大量研究，迄今人类还没开发出能够有效预防艾滋病的疫苗。