I distinctly heard the loudspeaker calling passengers for the Turin-Amsterdam flight.是什么意思？

I distinctly heard the loudspeaker calling passengers for the Turin-Amsterdam flight.

我清楚地听到扩音器里在请都灵至阿姆斯特丹航班的旅客登机。

distinctly

adv. 明显地，无疑地，确实地，逼真；

例句
The spectacle of the former naval officers washing their dirty linen in public was distinctly embarrassing...
前海军官员们自揭伤疤的做法显然非常令人尴尬。

heard

v. 听到，听见( hear的过去式和过去分词 )，听说，得知，听取；

例句
He acted as if he hadn't heard any of it...
他表现得好像对此毫不知情。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

loudspeaker

n. 扩音器，扬声器，喇叭，扬场器；

例句
I distinctly heard the loudspeaker calling passengers for the Turin-Amsterdam flight.
我清楚地听到扩音器里在请都灵至阿姆斯特丹航班的旅客登机。

calling

n. 呼喊，（从事某职业或活动的）欲望，职业，邀请；v. 叫( call的现在分词)，通电话，认为，估计；

例句
The workforce have recently been calling for their working hours to be reduced. Many companies have accordingly switched to a five-day week.
工人们最近一直在呼吁缩短工作时间。许多公司于是转成了一周五天工作制。

passengers

n. 乘客( passenger的名词复数 )，旅客，白吃饭的人，闲散人员；

例句
Six passengers were killed in the accident.
六名乘客在车祸中丧生。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

flight

n. （物体的）飞行，航班，飞翔，楼梯的一段；vi. 成群地迁徙或飞

例句
The return flight of the aircraft was delayed...
回程航班被延误了。