副词
中文翻译：乐意地
同义词：
['at will', "at discretion例句：1. Please feel free to come over if you're in the neighborhood.（如果你在附近，请随意过来。）"]
例句：
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1. Please feel free to come over if you're in the neighborhood.
如果你在附近，请随意过来。
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2.The company is open for business at all hours of the day.
公司全天候营业。
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3. He decided to go to the park at his leisure.
他决定在空闲时去公园。