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PHRASE
无计可施;山穷水尽;走投无路
If you say that you are at the end of your tether, you mean that you are so worried, tired, and unhappy because of your problems that you feel you cannot cope.
例句
She was jealous, humiliated, and emotionally at the end of her tether...
她既忌妒又感到屈辱，感情上已经到了崩溃的边缘。
I've reached the end of my tether.
我已经无计可施了。
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N-COUNT
(拴动物的)拴绳，拴链
A tether is a rope or chain which is used to tie an animal to a post or fence so that it can only move around within a small area.
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VERB
将…拴(到)
If you tether an animal or object to something, you attach it there with a rope or chain so that it cannot move very far.
例句
The officer dismounted, tethering his horse to a tree.
军官下了马，把它拴到一棵树上。