地图系统若将经度录错一位,货船可能偏离预定航线数十公里。Dìtú xìtǒng ruò jiāng jīngdù lù cuò yí wèi, huòchuán kěnéng piānlí yùdìng hángxiàn shùshí gōnglǐ.If the mapping system records the longitude one digit wrong, the cargo ship may deviate from its planned route by dozens of kilometres.
地图上竖着的线表示经度,横着的线表示纬度。Dìtú shàng shù zhe de xiàn biǎoshì jīngdù, héng zhe de xiàn biǎoshì wěidù.On a map the vertical lines show longitude and the horizontal lines show latitude.
船长在海图上标出了这座小岛的经度。Chuánzhǎng zài hǎitú shàng biāo chū le zhè zuò xiǎo dǎo de jīngdù.The captain marked the longitude of this small island on the sea chart.