Your camcorder should have these basic features: autofocus, playback facility, zoom lens.
你的便携式摄像机应该具有这些基本特征：自动调焦、回放及变焦镜头。
《柯林斯英汉双解大词典》
2
Analyzing and comparing cities using the lens of this basic divide gives interesting context to how investment capital flows and housing prices have shifted.
用这一基本差异的视角分析、比较城市，为变化的投资资本流动和房价提供了耐人寻味的背景。
3
Before you look at lenses, it's important to understand the basic characteristics of lenses and be aware of why exactly your kit lens is an inferior product.