wù lǐ / kè / shàng / lǎo shī / jiě shì / le / zhì liàng / kuī sǔn / yǔ / jié hé néng / zhī jiān / de / guān xì

物理课上，老师解释了质量亏损与结合能之间的关系。

In physics class, the teacher explained the relationship between mass defect and binding energy.