Futa
abbr. Federal Unemployment Tax Act 联邦失业税金法
🗣️ 情景例句
Please pass the ...
请递给我……
Would you answer the phone please?
你能接下电话吗？
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）