重點講解：
1. be addicted to
成癮的，上癮的；
eg. The children are addicted to computer games.
孩子們對計算機游戲上了癮749|b81@dux~e。
eg. After about three months, I was no longer addicted to nicotine.
大約3個月后，我就不再對尼古丁上癮了cK5w4nhvC&。
2. in theory
從理論上說；照理說；
eg. A school dental service exists in theory, but in practice, there are few dentists to work in them.
照理說，學校也有牙醫診所，可實際上，里面的牙醫寥寥無幾OR)jqhpupmGxnoKRVr^。
eg. It seems good in theory, but it doesn't work in practice.
理論上它似乎很不錯,但實際上卻行不通Dw#)z88^J-SdLIx_~X。
3. no kidding
（強調所說的是真實的或是認真的）真的，不是開玩笑；
eg. I'm scared. No kidding, really.
我很害怕6.@Dn85-#v~I)。不是開玩笑，真的sZNz*y.!7cs。
eg. No, no kidding. I am serious.
沒有開玩笑，我很嚴肅KlvnHBnq-Ky,Fhul。