The envelope contained a typed, unsigned letter demanding £75,000 in cash.信封里装着一封打印的、没签名的信，索要75,000英镑。You can be paid in cash weekly or by cheque monthly; those are the two alternatives.你的工资可以按周以现金支取，或按月以支票支取。二者可选其一。Give...
大家知道,SO2是略微可溶的气体.It is known that SO 2 is a moderately soluble gas.可溶的特大粒子在大气化学和雨物理学方面特别有意义.The soluble giant particles are of especial interest in atmospheric chemistry and rain physics.被去除的一部分可溶的有机物质转化为含有生物细胞的有机物.A por...