Oil - yielding organic matter is contained in the shales.在这些页岩里有产油的有机物质.Thus clays and shales tend to be impermeable.因此粘土和页岩就往往不透水.Sandstones are, as a rule , interbedded with shales.砂岩通常都与页岩互层.Alternating sandstones and...
There was a knot of tension in his stomach.他紧张得心揪得紧紧的。...political tension between radical and conservative politicians.激进派和保守派政治人士之间的紧张对峙Gradually the tension was subsiding , gradually the governor was relenting.风潮渐渐地平息...
Wavell responded gallantly to the many cumulative calls made upon him.韦维尔对历次向他提出的那些要求作了勇敢的回答.Churchill telegraphed an urgent message to Wavell...丘吉尔给韦维尔发了封紧急电报。General Wavell only obeyed under protest.韦维尔将军虽然遵从命令,但是心实不满....