The advances are based on work with nanometers - each one billionth of a meter in size - about one ten-thousandth the diameter of a human hair.是什么意思_The advances are based on work with nanometers - each one billionth of a meter in size - about one ten-thousandth the diameter of a human hair.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句