对于任一任务的最大持续时间，许多项目经理都有不同的经验，但一般而言，大多数任务都不应超过两周。
Many project managers have different "rules of thumb" for the maximum duration of any one task, but a common one is that most tasks should not exceed two weeks.
短期(持续时间不到两周)的情绪波动不被认为是这种疾病的特征要素。
Short term mood swings with a duration of less than two weeks are not considered characteristic elements of this disorder.
杨说这次的冷空气持续时间“史无前例的长”。雨雪天气从1月10日开始在中国的部分地区已经持续了两周。
Yang said the cold spell had been "unprecedentedly long". The rain and snow started in many parts of China on January 10 and have lasted for two weeks.
实际上，在新手册里，如果这些症状持续时间超过两周，丧亲的人就会被认为得了精神疾病：重度抑郁。
In fact, in the new manual, if symptoms like these persist for more than two weeks, the bereaved person will be considered to have a mental disorder: major depression.
实际上，在新手册里，如果这些症状持续时间超过两周，丧亲的人就会被认为得了精神疾病：重度抑郁。
In fact, in the new manual, if symptoms like these persist for more than two weeks, the bereaved person will be considered to have a mental disorder: major depression.
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