qián / xiàn / zhàn / shì / kǒng / yīn / hòu / fāng / zhèng / zài / jiā / jǐn / yùn / sòng / wù / zī

前线战事孔殷，后方正在加紧运送物资。

The fighting at the front is urgent, so the rear is rushing to transport supplies.