In this task, given a sentence in the Chinese language, your task is to convert it into the English language.

[EX Q]: 在全国范围内，820名14到17岁青少年在父母允许的情况下参与了这项调查。
[EX A]: A representative nationwide sample of 820 teens 14–17 years old participated in the study with parental permission.

[EX Q]: 这次火山喷发在冰川上形成了一个大洞，同时在冰川下形成了一条裂缝，现在已经有2公里（1英里）长。
[EX A]: The eruption has created a large hole in the glacier, as well as a fissure that is forming under the glacier, which is now around 2 kilometers (1 mi) long.

[EX Q]: 在加沙的十个议会辖区中，哈马斯拥有七个辖区的控制权。
[EX A]:
Of the ten council areas in Gaza, Hamas has control of seven.

