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upper level的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
形容詞 upper-level:
-
at an elevated level in rank or importance
upper level的用法和樣例：
例句
- "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小說(shuō)不能簡(jiǎn)單地看成是供消遣的，而實(shí)際上它給讀者展示更深刻的內容。" - An electron can drop from a higher level to a lower one with the emission of a packet of electromagnetic radiation.
利用電磁輻射束的輻射，能使電子從高能級落到低能級。
