Be sure the Information about the collection of the zebra mussel data.

要保证熟读有关收集斑马贻贝数据的说明.

The relevant factors that may limit or prevent the spread of the zebra mussel are uncertain.

可以限制或阻止斑马贻贝扩展的相关因素是不确定的.

Often this happens unintentionally, as when the zebra mussel was accidentally brought to Lake Erie by cargo ships.

就像斑马贻贝被货船意外地带进伊利湖一样。