Showerheads currently manufactured in the US have a flow-rate of 2.5 gallons per minute (gpm) or less.是什么意思_Showerheads currently manufactured in the US have a flow-rate of 2.5 gallons per minute (gpm) or less.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句