lì / shǐ / kè / shàng / lǎo / shī / jiè / shào / le / yà / luó / hào / shì / jiàn / de / lái / lóng / qù / mài

历史课上，老师介绍了亚罗号事件的来龙去脉。

In history class, the teacher explained the background and development of the Arrow Incident.