sean.海洋，海
seabedn. 海牀
seaboardn. 海岸，沿海地帶
seacoastn. 海岸，沿岸
seafarern. 船員，航海家
seafaringadj. 航海的，跟航海有關的
seafoodn.海產品，海鮮
seagulln. 海鷗
sealn.封蠟印記 vt.封
sealeda.密封的封口
seamn.縫口接縫骨縫
seamann.海員，水手水兵
seamanshipn. 船舶操縱術，航海技術
2. Season with salt， pepper and a pinch of cayenne.調以鹽、胡椒和少許辣椒粉。 3. I'm going to take a course in applied mathematics this semester.我這學期打算學習應用數學課程.
4、 He had three minors this semester.這學期他有三門副修科目.
5、 He was about seven years old， small and fine-boned like his mother.他大概7歲，骨架像他媽媽一樣嬌小均勻。 6. In less than seven days the infested plants had recovered.不到7天時間，受蟲害侵襲的植物就復原了。 7. The Peace of Ryswick was signed in September 1697.《里斯維克和約》簽訂於1697年9月。
8. The membership application came before the Council of Ministers inSeptember.會員申請書於9月提交部長會議審議。
9. That's why I must trust you to keep this secret.那就是為什麼我必須得相信你會保守這個祕密的原因
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