By 1961 anti-submarine warfare and counterinsurgency were their favorite candidates . 到1961年，反潜艇战和反叛乱就成为他们选中的两个题目。
The ejected mass then probably becomes the observed material of a supernova outburst . 在这种情况下，抛射物质可能就成为一次超能量爆发中的观测对象。
Once a critical point in the development process has been reached, land becomes of secondary importance . 当发展过程达到一个转折点后，土地就成为次要的了。
He was known to us all as dickie and his eccentricity had become legendary long before he died . 我们都叫他迪基，他的怪僻性格在他死前很久就成为传奇性的了。
So that it is chiefly a question of making sure he opens account with your bank when the time comes . 他们在时机成熟时是否在你的银行开立帐户就成为主要问题。
Since he was a man of superb intelligence and utter integrity, this soon proved invaluable . 因为他有超人的智慧和完全的正直的品德，这一点以后很快就成为可贵的了。
Once a satisfactory system of lubrication has been secured the hardness of the interacting elements becomes critical . 一旦获得了满意的润滑系统，相互作用的元件的硬度就成为紧要之事。
If superior vena caval obstruction lies above the azygosvein, it acts as a bypass collateral to the right atrium . 如果上腔静脉阻塞位于奇静脉之上，奇静脉就成为一条通入右心房的旁路侧支循环。
