Mister Chavez often went for long periods without food to protest the conditions under which the farm workers were forced to do their jobs.
VOA: special.2009.09.06
Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.
细胞生命期可以停止在细胞周期的某个点,并保持很长时间
A lot of these processed foods have very long shelf lives and therefore can be stored for long periods of time.
很多加工食品为了便于储藏销售,都有很长的保质期
Often the mother had to be treated in a hospital for long periods of time.
VOA: special.2009.12.06
Moreover, the kids we have are vulnerable for long periods of time and require our resources.
而且,我们的孩子很长一段时间,易受伤害,我们需要保护它们。
And to prepare himself, he went without sleep for long periods of time.
VOA: special.2009.03.18
He says even if people have a healthy body weight, sitting for long periods of time still has an unhealthy influence on blood sugar and blood fats.
VOA: special.2010.01.13
But,he says those arriving in Greece outstrip these efforts, so children remain in detention for long periods.
VOA: standard.2009.08.29
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