“应用广泛”常见的英文表达有 “widely applied”、“extensively used” 或 “have a wide range of applications”。以下为具体示例：
Widely applied：
This technology is widely applied in various industries.
（这项技术在多个行业中应用广泛。）
Extensively used：
The software is extensively used in education and business.
（该软件在教育及商业领域应用广泛。）
Have a wide range of applications：
Nanomaterials have a wide range of applications in medicine and electronics.
（纳米材料在医学和电子领域应用广泛。）
根据语境选择合适的表达即可。