They are the well developed active structures , intense and frequent seismic activities , and seldom seen super - high and steep slopes in hydroelectric project areas in the world , etc 如,发育的活动性构造、强烈和频繁的地震活动以及世界水电工程中罕见的陡峻超高边坡等。
When l was in the states , i could seldom see chinese tv or movies , while in china youngsters are already familiar with dustin hoffman , jody foster and tom cruise 在美国，我很少看到中国的电视剧或电影，而中国年轻人对达斯廷?霍夫曼、朱迪?福斯特和汤姆?克鲁斯早就很熟悉了。
In the fifties , the world saw many contributions made by ethnic chinese in mathematics , physics and engineering , whereas chinese names were seldom seen in biological and medical journals in the west 1950年代在数学物理学与工程方面华裔的贡献已经很多了,很受到国际的注意,而在生物学与医学的西方杂志中,华人的名字出现还不太多。
In the fifties , the world saw many contributions made by ethnic chinese in mathematics , physics and engineering , whereas chinese names were seldom seen in biological and medical journals in the west 1950年代在数学、物理学与工程方面华裔的贡献已经很多了，很受到国际的注意，而在生物学与医学的西方杂志中，华人的名字出现还不太多。
In recent years , the prevalence rates of food - borne parasitic diseases were sustained rise , especially the seldom seen cases are significantly increased , epidemiologic feature are closely related with bad eating habits 近年来，食源性寄生虫病患病率不断上升，尤其是以往少见或罕见的病例明显增多，而其流行与不良饮食习惯密切相关。
Since the conductor seldom saw the films until the night before they were to be shown ( if indeed , the conductor was lucky enough to see them then ) , the musical arrangement was normally improvised in the greatest hurry 由于乐队指挥直到电影放映前夜才会看到要配乐的电影（如果这个指挥确实有幸能够看到的话） ，音乐的编排通常是在十分仓促之中临时凑和的。
Now , the research that the accomplishment of modern travel economy is very abundant , but is not seen for the research of chinese travel history , while the research concerned with modern chinese travel development is also seldom seen 目前，研究现代旅游经济的成果相当丰富，但对中国旅游历史的研究却不多见，涉及到近代中国旅游发展的研究成果更是少见。
Concepts from theories such as resource - based theory , transaction cost theory and network theory are often used to explain specific aspects of reality , but we seldom see a thorough examination of the theories themselves 观念来自理论像是资源基础的理论，处置成本学说和网路理论的概念是过去时常说明的特殊现实观点?但是我们很少看见属于他们自己的一个理论来彻底的检查。
The freezing and drying bone still seems a fitting substitute among them . nowadays , as a commodity , immunological rejection of freezing and drying bone has seldom seen and cell - based bong tissue engineering has emerged as a promising alternative for bone repair 其中，基质材料尚无标准材料；活性因子，如骨形成蛋白等受多种因素的影响；血管化复合组织工程骨程序过于复杂和昂贵。
