重点讲解：
1. in-house
组织内部的；机构内部进行的；
eg. A lot of companies do in-house training.
很多公司会进行内部培训。
eg. The lesson: don't limit yourself by overreliance on in-house talent.
教益：莫要过于依赖公司内部的安全人员，而限制自己。
2. start off
从…开始；从…着手；
eg. Joe Loss started off playing piano background music for silent films in the 1920s.
乔·洛斯先是于 20 世纪 20 年代为无声电影弹奏钢琴背景音乐。
eg. What shall we start off this thing with?
我们该从哪儿开始谈这件事？
3. beyond question
毫无疑问；确定无疑；
eg. People always believe anything that Mark says, his honesty is beyond question.
人们相信马克所讲的每一句话，他的诚实无庸置疑。
eg. Parents are beyond question the first teachers of children.
家长无疑是孩子的第一任老师。