A/B Testing Vault
Select a learning stage to simulate the episode flow.
Stage 2 (A2/B1) - 入门版
2 Episodes
极简句型，基础词汇
Stage 3 (B1/B2) - 进阶版
1 Episodes
中高级社交痛点词汇
Stage 5 (Native) - 母语版
2 Episodes
大量习语和俚语