一丝发抖的声音，在空气中愈颤愈细，细到没有，周围便都是死一般静。
The old woman’s shaking voice vanished in the air. It was dead still around.
在生物质快速热解的研究中，生物质细粉的稳定加料问题非常重要。
Biomass powder feeding is an important problem in the study of fast pyrolysis.
长针中的一条细得多，它代表秒。
One of the long hands is much thinner. It stands for the second.
长针中的一条细得多，它代表秒。
One of the long hands is much thinner. It stands for the second.
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