1.but he said new security legislation would be introduced in place of the emergency laws.

in place of代替

例句：Even grafting new blood vessels in place of the diseased coronary arteries has been tried.
甚至移植新血管代替不健康的冠状动脉的方法都已经试过。

2.We cannot allow people's security to be at stake.

at stake危如累卵,危险

例句：Your health is at stake.
你的健康状况濒临危险。

3.A rebel spokesman has accused the Libyan leader Colonel Gaddafi of being bent on creating a huge humanitarian crisis in the city of Misrata, besieged by government forces since February.

bent on下决心

例句：Jim seems bent on becoming a musician.
吉姆似乎下决心要成为音乐家。

4.At present, a male royal heir would always accede to the throne ahead of an older sister.

accede to就任

例句：Accede to the throne.
就任国王

答应

例句：Will you accede to her request?
你答应她的请求吗?