海洋倾废法生效后，就有公司等待着将城市“生物固体”转换成为“有效的土壤改良剂和天然肥料”。
By the time the Ocean Dumping Act took effect, there were companies waiting to convert municipal "bio-solids" into an "effective soil conditioner and natural fertilizer".
一个单位，一个企业，能否产生效益，取得成绩，实现目标，都与管理方法和手段是否有效密切相关。
Whether a unit, or an enterprise can generate beneficial results, gain achievements, or reach its goals is closely linked to its management methods and skills.
你可以自己决定购买有效期为24、48或72小时的卡，而该卡在盖章标明你第一次使用它的那个日期和时间才开始生效。
You decide whether you want a card that is valid for 24, 48 or 72 hours. The card will not be valid until it is stamped with the time and date the first time you use it.
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