Captain Nemo and his muscular companion were already stretched out in this clear crystal, setting us a fine naptime example.
尼摩船长和他的壮健同伴，早就躺在清澈的水晶体中，先给我们作出睡眠的榜样了。
Crystal sets
原声例句
海底两万里（原版）
22年北京卷真题
Crystal set out to change that, and helped to create a global movement.
Crystal 着手改变这种状况， 并帮助发起了一场全球运动。
中文百科
矿石收音机 Crystal radio
（重定向自Crystal sets）
矿石收音机，简称矿石机，是利用天然矿石或晶体二极管作为检波组件，加上天线、地线、调谐电路和耳机等制成的收音机。
第一次由Greenleaf Whittier Pickard在大约1900年制造，并且使用条形晶体矿石来探测无线电信号。
人们第一次制造和使用了简单低价的矿石收音机不需要电池或电能。即使在第一次世界大战之后电子管收音机被普遍使用, 矿石收音机依旧非常流行, 特别是在初级业余无线电爱好者和学生当中。他们制作矿石收音机以学习基本的电子和通信知识。
英语百科
Crystal radio 矿石收音机
（重定向自Crystal sets）
A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very simple radio receiver, popular in the early days of radio. It needs no other power source but that received solely from the power of radio waves received by a wire antenna. It gets its name from its most important component, known as a crystal detector, originally made from a piece of crystalline mineral such as galena. This component is now called a diode.
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