rú / guǒ / bǔ / jǐ / xiàn / bèi / qiē / duàn / qián / xiàn / bù / duì / jiù / kě / néng / fù / bèi / shòu / dí如果补给线被切断,前线部队就可能腹背受敌。If the supply line is cut off, the troops at the front may be attacked from both sides.