是呀。所以你要赶快装个防毒软件，还要经常查毒杀毒，不然哪天中了特洛伊木马，被别人窃取了你的个人密码，控制了你的电脑可就麻烦了。
shì yā 。suǒyǐ nǐ yào gǎnkuài zhuāng ge fángdúruǎnjiàn ，háiyào jīngcháng chádú shādú ，bùrán nǎtiān zhòng le Tèluòyīmùmǎ ，bèi biérén qièqǔ le nǐ de gèrén mìmǎ ，kòngzhì le nǐ de diànnǎo kě jiù máfan le 。
It really is. So you should hurry up and install anti-virus software. And you should frequently scan for and kill viruses. Otherwise, there will come a day when you get infected with a Trojan horse. Someone will steal your personal passwords and take control of your computer. What a pain!