They reduced the allowable harvest of horseshoe crabs, and they prohibited any harvest at all during the period when the shorebirds are visiting.
他们降低了马蹄蟹的允许捕捞量，他们禁止候鸟停留期间的任何捕捞。
Because jobs can also be created with intervals of allowable execution, if the job is not retrieved during a validity period, it is not run.
由于也可以按允许执行的间隔创建作业，因此如果未在有效期内检索作业，则它不会运行。
It is also found that there exists a maximum isolated structure period at which the height width ratio is zero or the displacement of the rubber bearing exceeds the allowable value.
研究还发现，存在一个最大的隔震结构周期使高宽比限值等于零或隔震层位移超过容许值。
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