此行

cǐ xíng jí xiōng nán duàn

此行吉凶难断。

It is difficult to foretell whether this trip will be a success or not.

wǒ men cǐ xíng de mù biāo shì què bǎo jǐng fāng yī fǎ zhí xíng gōng wù

我们此行的目标是确保警方依法执行公务。

We are here to make sure that the police operate within the bounds of the law.