n.

1. （牛、馬等的）拴繩，繫鏈[C]
2. （能力等的）限度，範圍[the S]
   This is beyond my tether.

   這是我力所不能及的。

vt.

1. （用繩、鏈等）拴
   That boat was tethered to the ship by a rope. When the ship changed position, that boat moved as well.

   那艘小艇是由一條繩索繫於大船。當大船變動位置時，小艇也跟著移動。

v.

n.