The greatest obstacle to the Hazardous Environment Combat Unit was a Black Mesa research associate named Gordon Freeman.
对HECU最大障碍就是黑山研究所一个叫戈登弗里曼的研究员。
When the HECU arrived at Black Mesa they swiftly established control over the surface areas and the Black Mesa Central Command Complex.
当HECU到达黑山基地后，他们迅速控制了表面地区，并建立了中央指挥中心。
Although the presence of Xen creatures in Black Mesa began to decline, a new group of creatures known as 'Race X' commenced their own invasion of the facility.
虽然当前在黑山研究所的XEN生物开始减少，可是一群新的被称为“X族”的生物开始他们自己的入侵。
Although the presence of Xen creatures in Black Mesa began to decline, a new group of creatures known as 'Race X' commenced their own invasion of the facility.
虽然当前在黑山研究所的XEN生物开始减少，可是一群新的被称为“X族”的生物开始他们自己的入侵。
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