river tug

基本解释

Tug-of-war with water: Brother and sister pull a junk around a bend in the Han River.
拉纤：兄弟姊妹弓身全力拉着汉江里的帆船。
Likewise, when they are going upstream, it takes additional horsepower and more tug to push the same amount of load that they would push in a normal river, a slack river.
同样的道理，当逆流而上时也要加大马力。同样的负载，拖船比在正常水流情况下承担更大的负荷。

Williamson sits along the Tug Fork River in a part of the state long associated with violence.
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