Our immune system is meant to protect the body from invading parasites , bacteria and other foreign substances .
我们的免疫系统是要保护身体免受寄生虫、细菌和其它外来物质的侵犯。
Researchers hope a new system could automatically scan the hours of cctv footage police have to comb through to identify suspects without invading privacy .
About 100 people marched through the capital 's streets , some carrying signs accusing china of invading its territorial waters , the ap reported .
据美联社报导，约有100人在河内街头游行，一些人高举标语，指责中国侵犯越南领海。
Humans can draw on a vast unconscious vocabulary of movements-we know how to politely move around someone in our path , how to sense when we 're invading someone 's personal space .
人类能运用大量无意识的运动范畴我们知道如何友好地让路给别人，如何察觉自己侵犯了别人的私人空间。
At a time when video surveillance cameras have become a common presence on chinese highways and street corners , in residential compounds and public-transport vehicles , some believe that devices meant to deter crime are instead invading privacy .
