为干出产值而研究技术。

Dylan Marlais Thomas, born October 27, 1914, in South Wales, was the archetypal Romantic poet of the popular American imagination—he was flamboyantly theatrical, a heavy drinker, engaged in roaring disputes in public, and read his work aloud with tremendous depth of feeling and a singing Welsh lilt.

有 12 个球，外形一模一样，其中有 11 个是真球，重量相等；有 1 个假球，与真球重量不同，但不知道假球比真球重还是轻。问能否用没有砝码的天平称三次，将假球找出来，并判断出假球比真球重还是轻。

了解一下.

记录下来, 省着一遍遍查…

(王道乾先生译)

了解一下当成文学素材.

能愿动词介绍。