Results. The majority of studies found were level IV, with only limited numbers of higher level studies.
结果:多数研究的可信度级别为IV级,仅有少数为高水平研究。
In 1949, China had only nine maternity and child care centers, with limited numbers of beds and medical workers.
1949年,全国仅有妇幼保健所9个,病床床位及工作人员微乎其微。
They want fabrics created specially for the season, pieces in limited Numbers, and of a quality that reflect the price point.
他们要的是为这个季节量身定做的面料,限量版和能够反映出价位的品质。
MSF is known for its daunting missions, for treating overwhelming numbers of victims with limited resources in often deplorable conditions.
VOA: standard.2010.06.29
It's harder to find, they're more limited numbers, and in general, more difficult until eventually down this pathway you have fully differentiated cells, cells that are fully mature and performing the function of the mature organ.
不过找起来更困难,因为它们数量稀少而且通常很难定位,在分化的终末阶段,你可以看到完全分化的细胞,这些细胞完全成熟,在成熟的器官中发挥功能
So, one that perhaps does not reproduce in such high numbers that you create an overwhelming infection, but one that still goes through its lifecycle but is limited in its effect.
因此,一方面这些病毒不会大量复制,从而不会导致暴发性的感染,另一方面,它依旧在进行生命周期循环,只不过对其效用进行了限制
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