对此提供的理由包括检测盒不足或负担不起，缺乏基础设施以及经培训的工作人员短缺。
Reasons given for this include scarcity or unaffordability of test kits, lack of infrastructure and shortage of trained staff.
为加大供应以应对日本核电短缺带来的电力不足，液化天然气现货价格上涨。
But the spot price of liquefied natural gas increased when supplies were diverted to Japan to make up for the shortfall in nuclear power.
由于供应短缺和经济情况的变动，混合动力汽车的月销量也时有波动。 但考虑到混合动力汽车的增长趋势，这种波动不足为虑。
So there is a growth trend here that sweeps away month-to-month variations in sales levels due to supply shortages or economic conditions.
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