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CONVENTION
哈羅;你好
You say 'Hello' to someone when you meet them.
例句
Hello, Trish...
你好，特里茜。
Do you want to pop your head in and say hallo to my girlfriend?
你要不要進來和我女友打個招呼？
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CONVENTION
（打電話時的招呼語）喂
You say 'Hello' to someone at the beginning of a telephone conversation, either when you answer the phone or before you give your name or say why you are phoning.
例句
A moment later, Cohen picked up the phone. 'Hello?'
過了一會兒，科恩接起電話?！拔?？”
Hallo, may I speak to Frank, please.
喂，我找弗蘭克。
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CONVENTION
（用于引起別人注意）喂
You can call 'hello' to attract someone's attention.
例句
She could see the open door of a departmental office. 'Hello! Excuse me. This is the department of French, isn't it?'...
她看到一個系辦公室的門開著?！拔梗≌垎枺@是法語系，對嗎？”
Very softly, she called out: 'Hallo? Who's there?'
她輕聲細氣喊道：“喂？有人嗎？”