I was charged with running the second Ebola treatment unit in the city.
我负责管理该市第二个埃博拉治疗单位。
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Finally, Montrezl Harrell looked like his old self in the second unit. He has been playing his way back into shape after taking time away from the team because of a death in the family.
In film, the second unit is a discrete team tasked with filming shots or sequences separate from the main, or "first", unit. The second unit will often shoot simultaneously with the first unit, allowing the filming stage of production to be completed faster.