1. explore vi.勘查, 探测
例句:Let us explore the meaning of this term.
让我们解释这个名词的意义。
2. detect vt.查明,发现; 洞察
例句:Attempts have failed to detect allantoicase.
试图检测尿囊素酶没有成功。
3. spend vt.用钱,花钱
例句:This is not the way to spend our fifth anniversary.
这不是我们过五周年纪念日的方式。
4. protection n.保护; 护照
例句:The lee of the rock gave them protection against the storm.
岩石的遮掩使他们得以免受暴风雨袭击。