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- 中緯度時(shí)現E層midlatitude sporedic E layer
- 在中緯度中和時(shí)現E層分子和金屬離子的相對濃度Relative concentrations of molecular and metallic ions in midlatitude intermediate and sporadic-E layers
- 時(shí)現E層sporadic E layer
- 極光時(shí)現E層auroral sporadic E layer
- 中緯度時(shí)現Ｅ層mid-latitude sporadic E layer
- 赤道時(shí)現E層equatorial sporadic E layer
- 幾時(shí)what time; when
- 薄層folium
- 報時(shí)give the correct time
- 折現realization
- 中間層mesosphere
- 必要時(shí)in a pinch
- 面層surface
- 折現率discount rate
- 時(shí)有occasionally; from time to time
- 圖層layer
- 半時(shí)half
- 這塊殖民地現已獲得獨立。The colony has now attained nationality.
- 膜層retia
- 1939年戰爭爆發(fā)時(shí)，她的父母在國外，他們直到戰爭結束時(shí)才能返家。Her parents were abroad when the balloon went up in1939 and they could not return home until the war was over.
