名詞 extremity:

1. an external body part that projects from the body
   同義詞：appendage, member
2. an extreme condition or state (especially of adversity or disease)
3. the greatest or utmost degree
4. the outermost or farthest region or point
5. that part of a limb that is farthest from the torso

1. Either extremity of the main axis of a nucleus, a cell, or an organism.
   卵細(xì)胞的極細(xì)胞核、細(xì)胞或有機(jī)體的主軸兩端的任一端
2. He was driven crazy by the extremity of pain.
   極度的痛苦使他發(fā)狂。

ex.trem.i.ty

n.（名詞）
【復(fù)數(shù)】 ex.trem.i.ties
The outermost or farthest point or portion.
末端，極點(diǎn)：最外或最遠(yuǎn)的點(diǎn)或部分
The greatest or utmost degree:
極度：
例句：
the extremity of despair.
極度失望

Grave danger, necessity, or distress.
險(xiǎn)境，困境：極度危險(xiǎn)、需要或痛苦
A moment at which death or ruin is imminent.
臨死，臨終：臨死或毀滅的時(shí)刻
An extreme or severe measure.
嚴(yán)厲措施：極端或激烈的手段

A bodily limb or appendage.
四肢或身體的附屬肢體
A hand or foot.
手或足