to feel guilty as a thief (idiom); to have sth on one's conscience
Definitions (Wiktionary)
phrase, idiomatic
to have a guilty conscience (syn.) 作賊心虛, 作贼心虚
但是他們做賊心虛，怕共產黨阻擋他們的去路，更怕老百姓罵漢奸。
但是他们做贼心虚，怕共产党阻挡他们的去路，更怕老百姓骂汉奸。
dàn shì tā men zuò zéi xīn xū ， pà gòng chǎn dǎng zǔ dǎng tā men de qù lù ， gèng pà lǎo bǎi xìng mà hàn jiān ． But, with the cowardice of thieves, they fear that the Communists will block their exit and, what is more, that the common people will brand them as traitors.
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Examples (Wiktionary)
Mandarin
但是他们做贼心虚，怕共产党阻挡他们的去路，更怕老百姓骂汉奸。
但是他們做賊心虛，怕共產黨阻擋他們的去路，更怕老百姓罵漢奸。
dàn shì tā men zuò zéi xīn xū ， pà gòng chǎn dǎng zǔ dǎng tā men de qù lù ， gèng pà lǎo bǎi xìng mà hàn jiān ．
But, with the cowardice of thieves, they fear that the Communists will block their exit and, what is more, that the common people will brand them as traitors.