tether
核心词议：

速记方法
速记技巧 词源记忆法 可能来自古诺斯语tjothr，拴绳，来自Proto-Germanic*teudran，绳子，来自PIE*deu，绑紧，系牢，*tro，工具格后缀，词源同rudder.

知识扩展
习语积累 习语 n. be at the end of your tether also (NAmE be at the end of your rope) 筋疲力尽；智穷力竭；山穷水尽 to feel that you cannot deal with a difficult situation any more because you are too tired, worried, etc.

中文词源： tether 拴绳 可能来自古诺斯语 tjothr,拴绳，来自 Proto-Germanic*teudran,绳子，来自 PIE*deu,绑紧，系牢， *tro,工具格后缀，词源同 rudder. tether
精选例句

常见考点例句：

The cow had broken her tether and was in the cornfield .

那牛弄断了系绳，跑到玉米田里去了。

Not confined or restricted with a tether .

没有被绳、链等限制或者束缚。

To tether an animal or restrict its movement .

把动物拴住或者限制它的活动范围。

She is at the end of her tether .

她已经智穷技竭。

I wonder if miles hasn 't pulled loose from his own tether .

我不相信麦尔斯还没有把身上的绳索拉松一些。