center, middle, heart, core, midst

名詞 middle:

1. an area that is approximately central within some larger region
   同義詞：center, centre, heart, eye
2. an intermediate part or section- Aristotle
3. the middle area of the human torso (usually in front)
   同義詞：midriff, midsection
4. time between the beginning and the end of a temporal period

動詞 middle:

1. put in the middle

形容詞 middle:

1. being neither at the beginning nor at the end in a series
   同義詞：in-between, mediate
2. equally distant from the extremes
   同義詞：center, halfway, midway
3. of a stage in the development of a language or literature between earlier and later stages
4. between an earlier and a later period of time

1. The sheets have worn thin in the middle.
   床單的中間部分磨薄了。
2. There are 300 students or so in this middle school.
   這所中學大約有300個學生。
3. A boy rushed into the classroom in the middle of the exam.
   考試中間，有個男孩沖進了教室。
4. He is standing in the middle of the classroom.
   他正站在教室中間。
5. Farther than another from the center or middle.
   遠離中心的比在中心處或中間的一個更遠的
6. He planted roses in the middle of the garden.
   他在花園中間種上玫瑰。
7. The man has reached middle age.
   這人已到了中年。

mid.dle

adj.Abbr. mid.（形容詞）縮寫 mid.
Equally distant from extremes or limits; central:
當中的；中央的：離兩端點或兩界點等距離的；中央的：
例句：
the middle point on a line.
一條線段的中點

Being at neither one extreme nor the other; intermediate.
中部的，居中的：既不在一端，又不在另一端的；中間的

Intervening between an earlier and a later period of time; being an intermediate part of a sequence or series:
中期的；中間的：在早期和晚期的中間的；作為一系列或者一連串的中間部分的：
例句：
the middle years.
中年

Middle Geology Of or relating to a division of geologic time between an earlier and a later division:
Middle 【地質學】 中期的：屬于或關于地質年代早期和晚期中間部分的：
例句：
the Middle Paleozoic.
中古生代的

Middle Of or relating to a stage in the development of a language or literature between earlier and later stages:
Middle 中古的：屬于或關于語言或文學發(fā)展早期和晚期中間部分的：
例句：
Middle Swedish.
中古瑞典語

Grammar Of a verb form or voice in which the subject both performs and is affected by the action specified.
【語法】 中動態(tài)的：和動詞形式或動詞語態(tài)有關的，這個動詞的主語既是行為主體，又受行為所影響
n.（名詞）
An area or a point equidistant between extremes; a center:
當中，中央：離兩端等距離的部分或點；中心：
例句：
the middle of a circle.
圓的中心

Something intermediate between extremes; a mean.
中部，中間，平均：兩個極端的中間事物；中項
The interior portion:
內部：
例句：
the middle of a chain.
鏈條的內部

The middle part of the human body; the waist.
身體的中部；腰部
Logic A middle term.
【邏輯學】 中項
v.tr.（及物動詞）
mid.dled,mid.dling,mid.dles
To place in the middle.
放在中間
Nautical To fold in the middle:
【航?！?/i> 把…對折：
例句：
middle the sail.
升半帆

來源：
Middle English middel
中古英語 middel
from Old English * see medhyo-
源自 古英語 *參見 medhyo-