对于这一点，波尔玛也赞同，并且指出，用于常规轻型飞机的活塞式发动机行不通还有其他原因：要是有水渗入气缸内，它就不能工作了。
Polmar agrees, and points out that the piston engines used in conventional light planes are ruled out for other reasons: they would fail if any water leaked into the cylinders.
马丁·杰西斯·西尔·威斯特，波尔图莫拉莱斯·埃玛当地学校的一名教师表示，当地人的抵触非常猛烈。
Martin Jesus Silvestre, a teacher at Puerto Morales Ayma's elementary school, says resistance from locals was fierce.
他们之所以广受瞩目，在于音乐种类的广泛性，从传统的合唱曲到进行曲，波尔卡舞曲和玛祖舞曲。
They are popular for their wide range of different musical pieces: from traditional chorals to Marches, Polka and Mazurka.
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