Mount Unzen has been spewing out volcanic ash, gas, and rock today.云仙山今天一直在向外喷涌火山灰、气体和火山岩。The volcano spewed out more scorching volcanic ashes, gases and rocks.火山喷出更多灼热的火山灰、气体和岩块。St Vincent is a lush, volcanic island.圣文森...
The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.麦草 碱木素在碱催化下经脱甲基改性可提高其反应活性.Benzbromarone was synthesized from salicylaldehyde by condensation with chloroacetone, reduction,...
长椅周围的人群渐渐散去了。The crowd around the bench began to melt away.我们三三两两从农舍散去。We fanned out from the farmhouse in twos and threes.半夜时分,人群渐渐散去了。By midnight the crowd had thinned....