How long can we continue to supplement agroecosystems with energy derived from declining fossil fuel supplies?由于矿物燃料供应量下降,我们供应农业生态系统能量能持续多久?Power Industries – Nuclear, Fossil Fuel, Combined Cycle, Cogeneration and Distri...
She carefully noted whether her math problems had pluses or minuses before she began her work.她开始做题前,很细心地看题目数字前是正号还是负号.Let's consider the pluses and minuses of moving house.咱们考虑一下搬家的利弊吧.His new job has several pluse...
所有的梨亚科是由两个远缘祖先类型双杂交演化的异源多倍体.All the Pomoideae were allopolyploids drived from a doubled hybrid between two remote ancestral types.东天山尾亚杂岩体: 同源还是异源? -- 来自黑云母的证据.Weiya complex, eastern Tianshan: Single - sourced or diverse...
Television broadcasters were warned to exercise caution over depicting scenes of violence.电视台受到警告，要求对暴力场面的描绘采取谨慎态度。"Keep quiet, or they'll all come out," they warned him.“别作声，否则他们全都出来了，”他们警告他。He warned that the acti...