预先,事先;

词根词缀法
before前+hand手
If you want me to put your case forcibly, you must brief me thoroughly beforehand.
要是你想让我把你的案子处理得有说服力,你先得原原本本地向我介绍情况。
来源:《汉英大词典》Moves out after since Professor Wang from beforehand dwelling, I have not seen him.
自从王教授从以前的住处搬走以后, 我一直没看见过他.
来源:网络文摘精选They according to will design the good respective track to move beforehand in the outer space.
它们将按事先设计好的各自的轨道在太空中运行.
来源:网络文摘精选It is reasonable to assume that he knew beforehand that this would happen.
有理由认为他事先就知道会发生这样的事。
来源:《牛津高阶英汉双解词典》Bonus distribution month can be set up beforehand, such as quarterly bonus and annual bonus.
可预先设定各类奖金发放月份, 如季度奖、年终奖等.
来源:互联网摘选Saunas can be hazardous if misused. Avoid a big meal beforehand.
洗桑拿浴如果方法不当会有危险,浴前切忌饱食。
来源:《柯林斯高阶英汉双解学习词典》
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