By the late eighties their number had grown fourfold.到80年代末的时候，他们的数量已是原来的4倍。For a diagnosis of tularemia you need a fourfold increase in serum antibody levels.要诊断是兔热症,她的血清抗体等级需要有4个部分的增长.Electric hand is basic be electric...
At present we're gleaning information from all sources.目前，我们正从各种渠道收集信息。His pale gray eyes were gleaning with ferocity and triumph.他那淡灰色的眼睛里闪着残忍和胜利的光芒.I was gleaning the stray items from the evening papers.我在翻阅晚报上的花絮...
Some of the students are welding capacitors; the others resistors.学生中的一些人在焊接电容, 另一些人在焊接电阻.It is as if certain beds in the sub - surface contained banks of tiny capacitors.好象地下某些岩层包含了成排的小电容.This specification contains des...
Sandstones are, as a rule , interbedded with shales.砂岩通常都与页岩互层.Oil - yielding organic matter is contained in the shales.在这些页岩里有产油的有机物质.Alternating sandstones and shales are regarded as important.蚀变的砂岩和页岩是很重要的....