The way zebra mussels usually travel across the ocean is that a ship takes on some fresh " ballast water" in Europe and then empties that water into American waterways when it arrives.

斑马贻贝通常穿越海洋的方式是， 一艘船在欧洲装载一些新鲜的“压载水” ，然后在到达美国时将这些水排入美国水道。