the probl defies solution 这个问题很难解决
EU s attitude to the doctrine of international exhaustion is vague, but this probl.
对商标权的国际穷竭问题，世界各国有各自不同的态度。
On the whole, each of the software has its own merit and suitability. The software must be analyzed and selected in application on the basis of the practical probl…
总体来说 ，各软件都有自己的优点和适用性 ，使用中须根据研究的具体问题加以分析选择。
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