based 是 base 的过去式、过去分词

base

KK [bes] /beɪs/

名词

1
基础、根基、依据
Trust is the base of any long-term working relationship.
信任是任何长期工作关系的基础。
2
底部、底座
There was a small crack in the base of the vase.
花瓶的底部有一道细小的裂痕。
3
基地、驻地军事
The soldiers returned to base shortly before midnight.
士兵们在午夜前不久返回基地。
4
据点、总部
The company uses the port city as a base for its Asian operations.
这家公司以那座港市作为亚洲业务的据点。
5
支持群众、基本盘政治
The candidate spent the whole week energizing her base.
这位候选人整个星期都在激励自己的基本盘。
6
垒、垒包棒球
He slid into second base just ahead of the throw.
他在传球到达前一刻滑进二垒。
7
主要成分、基底
This sauce has a base of tomatoes and olive oil.
这种酱料以番茄和橄榄油为基底。
8
碱化学
A base turns red litmus paper blue.
碱会使红色石蕊试纸变蓝。

1
以…为依据、以…为基础常用被动
The movie is based on a true story from the 1970s.
这部电影改编自一九七〇年代的真实故事。
2
驻于、设点于常用被动
Our design team is based in a small coastal town.
我们的设计团队驻在一个海边小镇。

1
卑劣的、下贱的正式
He acted out of base motives rather than genuine concern.
他是出于卑劣的动机行事，而非真心关怀。