Assume it will take far longer than any other project you've previously done.
要料想到它可能比你以往的其他项目更耗时间。
The act (by someone having the authority) of annulling something previously done.
取消以前做的事情。
Maybe they have previously done what you are doing, and can provide time-saving tips.
或许你手头上正在做的事情他们以前就已经做过，能为你提供很多节省时间的小技巧。
Previously, this type of editing had to be done on a separate page.
之前这类编辑必须在另外一个单独页面完成。
Next, we connect to the database as we have done previously.
接下来，我们像先前那样连接到数据库。
以前我们做了哪些工作？
Rather they must leverage heavily from engineering work that was done previously.
相反他们必须从以前做过的工程当中发挥高度之杠杆作用。
Rather they must leverage heavily from engineering work that was done previously.
相反他们必须从以前做过的工程当中发挥高度之杠杆作用。
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