numerous attempts

Therefore, numerous attempts have been carried out to improve the photoresponse of TiO2.

因此对TiO2进行各种修饰以提高其光响应能力是当前的热点研究课题。

The Chinese press has cited numerous attempts by enterprises to circumvent the law.

中国新闻媒体引一些公司企图规避该法的大量做法为例。

Numerous attempts to persuade him to write his memoirs came to nought.

无数次劝他写回忆录的尝试均以失败告终。

Numerous attempts have been made to hide the truth.

人们作了很多努力想掩盖事实。

Despite numerous attempts by author, with different focal distances and camera positions, the Y-shape shadows in photographs of the poster tiger never displayed any distortion ( Fig.10).

尽管作者进行了无数次尝试，以不同的焦距和不同的相机位置拍摄，墙画虎的照片中Y形阴影绝不会消失或扭曲。

Although they contain only a small fraction of all galaxies, rich clusters provide a powerful tool for the study of galaxy formation, dark matter, large-scale structure and cosmology. Numerous attempts have been made to investigate clusters of galaxies in last decades.

虽然富星系团在所有星系团中所占比例不多，但它是研究星系形成与演化、暗物质、大尺度结构和宇宙学的强有力工具，星系团Abell2199就是一个典型的富星系团。

Since 1975, when Rubin carried out her pioneering study, there have been numerous attempts to identify and describe strategies employed by good language learners and poor language learners or by ESL learners and EFL learners.

自从1975年Rubin进行她的开拓性研究以来，许多研究者试图确认和描述成功学习者与不成功学习者，或且二语学习者和外语学习者的学习策略。

Despite numerous attempts to diet, her weight soared.

尽管多次尝试节食，她的体重仍然飙升了。

On Saturday, he tried to buy the ticket for his trip returning home on Feb 8 but failed after numerous attempts.

上周六，他试图购买一张2月8日回家的车票，但屡试屡败。

Recently Russians were undertaking numerous attempts to start negotiations with Army command or with command of subordinate divisions.

近一个时期以来，俄国方面不断试图同集团军司令部或下属的各个师团司令部进行谈判。