重點講解：
1. in total 總共；總計；
In total, 45 per cent of adults in Britain are exposed to tobacco smoke at home.
英國總計有45%的成人在家里遭受到煙草煙霧的侵害*nS++!m2e1+。
2. make sense of 理解；弄懂；
This is to help her to come to terms with her early upbringing and make sense of past experiences.
這旨在幫助她認可自己早先所受的教育，并讓她了解自己過去的經歷e72B.T3|WB3。
3. on (the) one hand...on the other hand... 一方面…（另一方面…）；
On the one hand, if the body doesn't have enough cholesterol, we would not be able to survive. On the other hand, if the body has too much cholesterol, the excess begins to line the arteries.
一方面，如果體內沒有足夠的膽固醇，我們就無法存活下去unbMQ;~EkzxegTfvU9。另一方面，如果體內膽固醇過高，多余的膽固醇就會附著在動脈內壁上(fFqeesb]#dReA@。
4. wipe out 摧毀；毀滅；使滅絕；
The disease threatens to wipe out the entire population.
這種疾病有可能毀滅整個種群8ZHL1|,ecSuHsC2hRH。