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

解锁AI学习工具

注册即可使用强大工具，帮助你从每个视频中更快地学习。

场景解析 短语猎手 词卡复习 跟读练习 语音回放
免费注册
B1 中级 英语 7:24 Educational

Perfect Numbers and Mersenne Primes - Numberphile

Numberphile · 405,297 次观看 · 添加于 2 个月前

学习统计

B1

CEFR 等级

5/10

难度

用练习题学习

从这个视频生成词汇、语法和理解练习

词汇与语法 理解测验 雅思考试 写作练习
注册开始练习

评论 (0)

登录后评论
还没有评论。成为第一个分享想法的人！

注册解锁全部功能

追踪进度、保存词汇、练习题目

免费注册 登录

相关视频

Learn Advanced English with MOVIES — Now You See Me

B1 25:45

Anne Hathaway Forgets The Princess Diaries and The Devil Wears Prada Details, Chats The Idea of You

B1 10:23

HAIM Reveals How a '90s Tom Hanks Movie Inspired Their Album I quit (Extended) | The Tonight Show

B1 8:29

Last call: The decline in English pubs

B1 4:34

my realistic every day evening routine | hygiene + hair care + relaxing & more! allyiahsface vlog

B1 14:27
Numberphile

Numberphile

免费开始学语言

免费注册