oxygen poor layer贫: poor; impoverished氧: oxygen层: I storey; tier; stratum贫氧的: oxygen-deficient贫氧混合气: oxygen-deficient mixture下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:贫氧层,即可在微信中查询翻译