arbitrary/subjective/subject/object/objective
记忆：
1. arbitrary [ 5B:bitrEri ] Based on or subject to individual judgment or preference ar-bi-t-r-ary 音似“啊，逼他人”的， adj. 任意的, 武断的, 独裁的, 专断的 His arbitrary ruling forced many people to leave their homes. 他的专横统治使很多人离乡背井。
2. subjective [ sQb5dVektiv ] taking place within a person's mind subject-ive adj. 主观的, 个人的 We can’t decide totally based on subjective reasoning. 我们不能完全靠主观推理做决定。
3. subject [ 5sQbdVikt ] sub-ject n. 题目, 主题 What’s the subject of today’s writing?今天写作的主题是什么？
4. objective [ Eb5dVektiv ] object-ive n. 目标, 目的 adj. 客观的 The objective truth will come out sooner or later. 客观真相迟早出浮出水面。
5. object [ 5CbdVikt ] ob-ject n. 物体, 目标, 宾语 It’s Galileo who proved heavy objects and light objects fall to the ground at the same speed if there is nothing holding them back. 是伽利略证明了如果没有空气阻挡，轻重物体会以同样的速度落到地上。
另类阅读：
The director is arbitrary. He often takes a subjective approach instead of an objective one. Sometimes he runs away from the subject, but no one objects to him as he won’t listen to any objection.