“在侧面的人或物”可以翻译为 “people or objects on the side” 或者更具体地表达为 “people or objects located at the side (position)” 。“on the side” 是较为常用且简洁的表达，侧重于描述位置处于侧面；而 “located at the side” 表述稍正式、详细一些，明确指出所处位置是侧面。
例如：
We could see some people or objects on the side during the parade.（在游行期间，我们可以看到侧面有一些人或物 。）
The painting depicts a main scene with several people or objects located at the side.（这幅画描绘了一个主要场景，旁边有一些人或物 。）