来自LingQ课程库的示例
- cheekbones. He has very well-defined facial features. This is
- for men's faces. ‘Well-defined' is similar, but can
- your facial features are well-defined, then your cheekbones, jaw
- its energy at a well-defined spot on the screen
- many possibilities and a well-defined thing at a particular
- analyze simple situations with well-defined constraints and you must

