重点讲解：
1. in total 总共；总计；
In total, 45 per cent of adults in Britain are exposed to tobacco smoke at home.
英国总计有45%的成人在家里遭受到烟草烟雾的侵害*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.
这旨在帮助她认可自己早先所受的教育，并让她了解自己过去的经历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，如果体内没有足够的胆固醇，我们就无法存活下去unbMQ;~EkzxegTfvU9。另一方面，如果体内胆固醇过高，多余的胆固醇就会附着在动脉内壁上(fFqeesb]#dReA@。
4. wipe out 摧毁；毁灭；使灭绝；
The disease threatens to wipe out the entire population.
这种疾病有可能毁灭整个种群8ZHL1|,ecSuHsC2hRH。