Polyad
幾個緊密相關的零件或元件的組合
??? 情景例句
Are you all right?
你還好嗎？
You'd have a better chance of catching the train if you took a bus to the station instead of walking.
如果你不是步行而是乘公共汽車的話，那你就比較有可能趕上火車。
The slope averages about 1 in 30, but contains steep,
坡度平均約為1/30，但其中包括陡峭的，