每天一個生活口語話題，一段地道的舉例回答，并附有詳細的詞匯，發音及用法講解。講解材料選自當今最先進最有效的英語原版教材，更加貼近生活。每天堅持聽講解，并根據問題練習，給自己一個地道輸入和輸出的機會，你也可以張口自信說英語。

主題：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: 傳送門
Squash: 壓扁
Probe：探測儀