但化学物质会使这些妇女处于“亚生育”的不同等级，亚生育即难怀孕。
But the chemicals may be pushing some women into the ranks of the sub-fertile, which means it is difficult to conceive.
在澳大利亚，我们使用公制计量方法并且绝缘等级即被作为代表耐热能力的热阻值。
In Australia we use the metric system of measurement and the rating of insulation is known as the R-value which means thermal resistance.
根据隔离等级的不同，实验动物设施可分为隔离系统、屏障系统、亚屏障系统和开放系统四种类型。
According to isolating level, experimental animal facilities are divide four kinds, and they're isolating system, barrier system, sub barrier system, and open system.
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