The two teaching approaches cut both ways, while after balancing them,i decisively back up the one that makes friends with students. 各有利弊:cut both ways
你好！线下offline 英[ˌɒfˈlaɪn] 美[ˌɑ:fˈlaɪn] adj. 离线的; 脱机的; 未连线的; 未联机的; adv. 未连线地; 未联机地; 脱机地; 离线地; [例句]There are two modes of backup and recovery for both Oracle and DB2 UDB databases: offline and online.对于Oracle和DB2UDB数据库，有两种备份和恢复模式：脱机和联机。
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