Break fresh/new ground (idiom)

●To do or discover something new; to pioneer.

　　（開闢新天地，開墾處女地）

Examples:　　

1.So are scientists breaking new ground in their quest to discover what causes the disease?　　

2.They were breaking new ground in consumer electronics.

Exert oneself (idiom)

●To use a lot of physical or mental effort.

　　（盡力，努力）

Examples:　　

1.He didn't want to exert himself on such a hot day.　　

2.We exerted ourselves mightily to raise funds.

Positive non-interventionism (noun)

●積極不干預主義或積極不干預政策，是前港英政府財政司夏鼎基（Philip Haddon-Cave）於1980年提出的術語，用以概括香港政府當時的「小政府、大市場」經濟政策。一些學者認為積極不干預政策是「香港奇跡」發生的重要因素；另一些學者則認為，從1970年代港府出資興建公屋和地鐵開始，積極不干預主義已經逐漸消亡，取而代之的是選擇性干預主義（selective interventionism）。

Indispensable (adj.)

●Someone or something that is indispensable is so important or useful that it is impossible to manage without them.（不可或缺的，必要的）

Examples:　　

1.Mobile phones have become an indispensable part of our lives.

2.His long experience at the United Nations makes him indispensable to the talks.

Shore sth up (phrasal verb)

●If you shore up something that is weak or about to fail, you do something in order to strengthen it or support it.（加強，改進）

Examples:　　

1.The democracies of the West may find it hard to shore up their defences.　　

2.The new public relations manager has the difficult task of shoring up the company's troubled image.