qiāng / guǎn / lǐ / de / táng / xiàn / mó / sǔn / hòu / shè / jī / jīng / dù / kě / néng / huì / xià / jiàng枪管里的膛线磨损后,射击精度可能会下降。When the rifling inside a barrel wears down, shooting accuracy may decrease.