每天一个生活口语话题，一段地道的举例回答，并附有详细的词汇，发音及用法讲解。讲解材料选自当今最先进最有效的英语原版教材，更加贴近生活。每天坚持听讲解，并根据问题练习，给自己一个地道输入和输出的机会，你也可以张口自信说英语。

主题：A portal to another world opens in front of you. You don’t know how long it will stay open or if you’ll be able to get back after you go through. What do you do?

You don't know if the other world has a breathable atmosphere, an atmospheric pressure you can exist in without being squashed like a bug, liquid water, enough sunshine, etc. You'd be an idiot to enter it. The most I would do would be to send a probe into it, and if it came back, see what it has to reveal. Once I know more I may enter it myself, or not...depending.

Portal: 传送门
Squash: 压扁
Probe：探测仪