he was in seventh grade--the other six team members were alleight-graders翻译

he was in seventh grade--the other six team members were alleight-graders翻译
he was in seventh grade--the other six team members were alleight-graders翻译

he was in seventh grade--the other six team members were alleight-graders翻译
他七年级,其他的六个组员都八年级.

他那时是7年纪, 其他6个队员都是8年纪的

他在七年级，其他六个队员都在八年级。