1
- a part of a whole; an amount, section, or piece of something一部分; 一定数量; 一节; 一片：
a portion of the jetty still stands
防波堤的一部分仍然矗立着
he could repeat large portions of Shakespeare.
他能够背诵莎士比亚作品中的很大部分。
1.1
- a part of something divided between two or more people; a share一份：
she wanted the right to decide how her portion of the allowance should be spent.
她希望有权决定如何花销她的那一份零用钱。
1.2
- an amount of food suitable for or served to one person（食物的）一（人）份：
a portion of ice cream
一份冰淇淋
burger joints offering huge portions.
供应大份汉堡牛排的店。
1.3
- Law the part or share of an estate given or descending by law to an heir【律】（根据法律赠与或遗留给继承人的）一份财产。
1.4
- archaic a person's future as allotted by fate; one's destiny or lot〈古〉命运, 天数：
what will be my portion?
我的命运会是什么样呢？
1.5
- （亦作marriage portion） archaic a dowry given to a bride at her marriage〈古〉嫁妆。
with obj.(一般作be portioned)
1- divide (something) into shares to be distributed among two or more people分配：
for centuries meadowland with common hay rights was portioned out.
在以往几个世纪中有公共干草权的草坪都是实行分配的。
1.1
- usu. as adj., with submodifier
portioned
serve (food) in an amount suitable for one person分份： generously portioned lunches.
分量很足的一份份午餐。
1.2
- archaic give a dowry to (a bride at her marriage)〈古〉给（新娘）嫁妆：
my parents will portion me most handsomely.
我的父母会给我一大笔嫁妆。
词源
Middle English: from Old French porcion, from Latin portio（n-）, from the phrase pro portione 'in proportion'.