1. consider vt. 考虑; 认为; 以为
例句：The government is being asked to consider a plan to fix the date of the Easter break
人们要求政府考虑确定复活节假期日期的计划。

2. disappearance n.失踪; 消失，不见
例句：Her disappearance has baffled police
她的失踪让警方很困惑。

3. 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。

4. observer n.观察员; 遵守者，观察者
例句：A casual observer would have taken them to be three men out for an evening stroll
乍一看的话，还以为他们三人是晚上出来散步的。

5. protect vt. 保护，保卫; 贸易保护
例句：Game laws protect wild life.
狩猎法保护野生动物。
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