重点讲解：
1. be instrumental in 有助益的；有帮助的；起作用的；
In his first years as chairman he was instrumental in raising the company's wider profile.
他任董事长的最初几年为提升公司的知名度起到了积极的推动作用p+hSq+-NW^QUn3.KXl。
2. in order to 为了；以便；目的在于；
In order to get a complete picture, further information is needed.
为掌握全面情况，还需要详细资料@fO8146dBBvi。
3. go back to 追溯到；回溯到；
The feud with the Catholics goes back to the 11th century.
与天主教的夙怨可以追溯到11世纪oAzPutj7f)~C_~3Q2o。
4. die out 逐渐消亡；灭绝；绝种；
I want to teach Irish so that it won't die out.
我想教爱尔兰语，这样它就不会彻底消失h+Fh|Lvx4~Q%68。