Tiānsè / jiànjiàn / àn / le / wǒmen / juédìng / jiébàn / ér / xíng / jǐnkuài / gǎn / huí / yíngdì

天色渐渐暗了，我们决定结伴而行，尽快赶回营地。

As it gradually grew dark, we decided to stay together and return to the campsite quickly.