英语短语词组词汇Appleton layer的音标、释义、翻译、用法及例句-英语短语词组词典

短语	Appleton layer
释义	Appleton layer 【地球物理学】阿普顿层，F₂电离层[见 Flayer]
随便看	keep sth on file keep sth out of sb’s sight (keep sth/put sth/be) under lock and key keep sth quiet keep sth quiet / keep quiet (about sth) keep sth quiet / keep quiet about sth keep sth to sth keep sth to yourself keep sth under observation keep sth under one’s hat keep sth under wraps keep sth under your hat keep sth up keep sth within bounds keep sth within bounds of reason keep sth ↔ back keep sth↔back keep sth↔back (from sb) keep sth↔down keep sth↔in keep sth ↔ off keep sth ↔ up keep sth↔up keep straight on keep tabs（或a tab）on

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