重点讲解：
1. for the first time 首次；第一次；
例句：For the first time luck hooked onto me.
运气第一次降临到我头上1G3g+LJG7)8NGQ+=;,。
2. at least 至少，起码；
例句：At least this second meeting had helped to thaw the atmosphere.
这第二次会议至少起到了缓和气氛的作用V0Fu6rTvOkEvk2yB-.。
3. prevent sb. from doing sth. 阻止；制止；阻碍；
例句：Cotton mittens will prevent the baby from scratching his own face.
棉的连指手套使婴儿不会抓伤自己的脸B7[IUxfNtc。
4. look for 寻找，寻求，谋求（解决方案或新的方法）；
例句：The working group will be looking for practical solutions to the problems faced by doctors.
工作小组将寻求切实可行的方案，以解决医生们遇到的难题d*VSi!.]dOcS1wTy。