Two of history's worst natural catastrophes occurred in 1970.1970年发生了历史上最严重两次自然灾害.The Swiss deposits contain evidence of such catastrophes.瑞士的遗址里还有这种灾难的证据.Periodic local catastrophes reduce populations.周期性的局部地区的灾变降低...
Blessed is he who expects nothing, for he shall never be disappointed.人无所求最享福，因他不为失望苦。Instead, we are blessed with the disciplining power of posterity.相反, 我们生来就享有后代所赋予的训导力量.Here the dynastic inheritance seemed to have be...
这一方法与溶胶分析相比过于繁重.This procedure is obviously much more tedious than sol analysis.由固体微粒悬浮在液体中所组成的溶胶叫胶态悬浮体.A sol that consists of solid particles suspended in a liquid is a colloidal suspension.在几个实验中已经研究了污染的大气中气溶胶的产生.The g...
The delivery boy dumped the groceries on the back porch.送货员猛地把食品杂货扔在后面的门廊上。Sir, Would eager to trap porch or chalkiness Tee?男士, 你想在蓝色或白色的发球台上发球?We rolled up to the front porch.我们坐车抵达前门廊。The old man napped on the porch.那位...
当变形量大于60%时, 组织发生有效球化.When the deformation rate is higher than 60 % , the spheroidization is effective.依据音频共振原理检测了球化率和基体组织参量.It has tested nodularity and matrix - structure on the principle of sonic resonance.球墨铸铁的球化率随超声声...
Computers and electronics are growth industries and need skilled technicians.计算机与电子行业属于蓬勃发展的产业，需要娴熟的技术人员。The BBC alone is sending 300 technicians, directors and commentators.单单英国广播公司就派出技术人员、导演、解说员等一行300人。Computer securit...
The only electrician we could get hold of was miles away.我们唯一能够联络到的电工离这里有好几英里远。We need an electrician to mend the iron.我们要请电工修理熨斗.Bodeau's 1988 exchange guest, Nick Aldrich, an electrician from Lynnwood, Washington,...