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
10:45
Educational
PCR (Polymerase Chain Reaction) Explained
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
Ben Affleck & Matt Damon Reflect on Their Careers Together | Vanity Fair
B1
17:27
The True Cost Official Trailer 1 (2015) - Documentary HD
B1
2:33
La La Land (2016) - This is Not Your Dream Scene (8/11) | Movieclips
B1
4:09
Three reasons why gaming IS good for your mental health - BBC
B1
4:46
Emotional Intelligence Example
B1
1:24
BOGObiology
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
