stellar photometry星体光度学This formation, called an accretion disk, may be very important in some stellar birth sequences.这种构成物即所谓吸积盘, 它在恒星诞生的某些阶段可能是非常重要的.If the stellar spectrum is known, the albedo of the dust can be obta...
He amended his speech by making some additions and deletions.他对讲稿作了些增删修改.The new edition of the dictionary carries 7000 additions to the language, which purists say is under threat.该词典的新版为该语言新增了7,000个词条，纯粹主义者们称该语言正面临威胁。S...
I had a case of the jitters during my first two speeches.我在最初两次讲演时感到非常紧张。I don't try to memorize speeches word for word.我不会试图一字不落地记住讲话要说的内容。The dinner was often a riotous affair enlivened by superbly witty speeches....