bái / lín / zài / kōng / qì / zhōng / róng / yì / zì / rán / bǎo / cún / shí / bì / xū / gé / jué / kōng / qì

白磷在空气中容易自燃，保存时必须隔绝空气。

White phosphorus can ignite spontaneously in air, so it must be stored away from air.