firsthand knowledge

• 第一手知识；直接知识

firsthand knowledge的用法和样例：

例句

1. He has a wider and fresher firsthand knowledge of many things.
   他具有许多事物的更广泛和更新颖的第一手知识。
2. The Antiquities Service allocated excavation permits and gave many Egyptology students firsthand knowledge of ancient Egypt.
   文物管理处发放考古发掘许可证，使很多埃及学学生获得了关于古代埃及的第一手知识。