短语
中文翻译：如果需要的话
同义词：
['if necessary', 'if the need arises例句：1. If it rains tomorrow', "we'll postpone our picnic to another day.（如果明天下雨，我们将推迟我们的野餐到另一个日子。）2. If you have any questions", 'feel free to ask me.（如果你有任何问题，请随时问我。）']
例句：
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1. If it rains tomorrow, we'll postpone our picnic to another day.
如果明天下雨，我们将推迟我们的野餐到另一个日子。
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2. If you have any questions, feel free to ask me.
如果你有任何问题，请随时问我。
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3.If I were in your shoes, I would do the same thing.
如果我处在你的位置，我也会做同样的事情。