The video owner has disabled playback on external websites.
This video is no longer available on YouTube.
This video cannot be played right now.
Watch on YouTube
B1 中级
英语
23:15
Educational
Adaptive (Acquired) Immunity - Immunology - Biology 🧬 of Immune System
学习统计
B1
CEFR 等级
5/10
难度
评论 (0)
登录后评论
还没有评论。成为第一个分享想法的人！
互动模式
测验
正确！
不太对。
正确答案：
相关视频
G20 summit opens in South Africa without Trump, Ukraine takes centre stage
B1
2:00
Jennifer Coolidge: Award Acceptance Speech | 29th Annual SAG Awards
B1
4:35
Exploring Antarctica: From Penguins to the Coldest Seas | SciShow Kids Compilation
B1
19:42
CAUGHT ON CAMERA: Chilling Murder in Broad Daylight | True Crime Documentary
B1
26:28
Every Accent in Game of Thrones EXPLAINED
B1
20:40
Medicosis Perfectionalis
测验
正确！
不太对。
正确答案：
观看视频时会出现测验
记忆技巧
来自此视频
免费开始学语言
