首次的

The young cellist will make her debut at the Kennedy Center tonight.

这位年轻的大提琴手今晚在甘乃迪中心首次登台。

Based on a series of analysis for the relevant data during the period of 1950~1989, the relationship between the ozone layer variation/solar activity and the periodically prevalent features of two kinds of human infectious diseases in China, the epidemic cerebrospinal meningitis and human plagueepisodes, is presented and analyzed for the first time in this paper.

通过对1950~1989年间一系列有关资料进行分析，首次研究和报道了臭氧层变化、太阳活动与流行性脑脊髓膜炎及鼠疫传染病性病率流行周期特徵之间的关系。

In our work, CFL is used as the data type of a functional programming language for the first time, and the relevant issues such as expression representation and type system are studied, which can be references to related researches.

本文工作首次把CFL作为函数式语言的数据类型，并研究了表达式表示形式和类型系统等有关问题，它们可为相关研究提供参考。

The infection is characterised by an ulcer, known as a chancre, that appears where the bacteria first entered the body.

感染的特点是一溃疡，称为一chancre ，出现如细菌首次进入人体。

The viewpoint of mechanical chemistry was firstly applied to analyze the forming mechanism of chemical bond.

首次应用机械力化学的观点，分析了型煤内化学键形成机理。

He credits the chiding of his wife, Carmen, for helping clarify his goals.

那年，他首次在马德里萨苏埃拉小歌剧院登台演出了经典歌剧《捧一束玫瑰的女孩》。

It.is predicted thatthe chigger mites must be widely distributed in this country.

南京地区恙螨的存在尚系首次记录。

Chirata, and they were identified as β-sitosterol and swerchirin by spectral method. These two compounds were got firstly from the petrolelum ether fraction of S. chirata.

结论］2种化合物β-谷甾醇与1，8-二羟基-3，5二甲氧基山酮均为首次从印度獐芽菜乙醇提取物的石油醚部位分离得到。

This is the first report that nifH gene of Klebsiella pneumoniae nitrogenase expressed successfully in the chloroplast of higher plants.

这是固氮酶nifH基因在高等植物叶绿体中直接成功表达的首次报道。

In 1678 the Dutch scientist Christian Huygens was the first to propose that light travels in waves.

1678年，荷兰科学家克里斯琴·海根首次提出光以波的形式运行。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。