It can sometimes require planning and always requires an initial push of momentum to get started.
它可能有时需要编制计划,而且总是需要一个开始实行的初始时间。
Plan some leisure activities that push your limits and require focus, like diving the Blue Hole in Belize or climbing Mt. Fuji in Japan.
计划一些扩大你的范围和需要专注的休闲活动,象在伯利兹的蓝洞潜水、在日本爬富士山。
Index push-downs require only a single-column index on the fact table, although they can use a multi-column index if the required foreign-key column is the first key in the index.
索引下推只需要事实表的单列索引,虽然在所需的外键列是索引的第一个键的情况下可以使用多列索引。
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