Uls
abbr. unsecured loan stock 不稳定的借贷股票
🗣️ 情景例句
There are three things that have to be done first, Harry.
首先我们必须做三件事， Harry。
John is really scared of airplanes.
约翰真的很怕乘坐飞机。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）