These same planning assumptions underlie the estimates of respirator and facemask usage for planning and stockpiling purposes provided in the subsequent sections of this proposed guidance.是什么意思_These same planning assumptions underlie the estimates of respirator and facemask usage for planning and stockpiling purposes provided in the subsequent sections of this proposed guidance.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句