Siu
abbr. 國際海員工會（Seafarers' International Union）；系統接口單元（System Interface Unit）
??? 情景例句
But it is not polite to ask older people their age.
但問老人的年齡是不禮貌的。
Give me a ring at my office.
打電話到我辦公室。
And anyone who gave more than a passing thought to the bottom confines of the oceans probably assumed that the sea bed was flat.
凡是稍稍想過大海海底的人大概都會認為海底是平坦的。