The best-developed scheme for human space travel is nuclear pulse propulsion, which the government-funded Project Orion worked on during the 1950s and'60s.
年代期间,营养不良和艾滋病病毒/艾滋病等问题持续存在,使人们对此有了更加清醒的认识。
During the 1990s, the persistence of such problems as malnutrition and HIV/AIDS has brought this awareness still more sharply into focus.
以色列在1980和1990年代期间发生用水短缺,严重影响了水产养殖业(Mires,2001年)。
Israel has suffered water shortages during the 1980s and 1990s which strongly affected aquaculture(Mires, 2001).
During the 1990s, many domestic reindeer were lost and lured away by the wild reindeer belonging to the Bulun, Leno-Olenek and Taimyr populations.
年代期间,匈牙利主要在空间科学领域开始与西欧各国开展双边合作活动。
During the 1980s, Hungary started bilateral cooperation activities with Western European countries, mainly in the field of space science.
年代期间,该系统开始从以物资平衡为基础的会计向统计委员会所建议的会计系统过渡。
The system began a transition during the 1990s, from accounting based on the materials balance to the system of accounting recommended by the Statistical Commission.
许多这样的小村庄首次发现奥格斯堡的现代城市20世纪80年代和90年代期间进入趴附近的乡村。
Many of these hamlets were first discovered as the modern city of Augsburg sprawled into nearby countryside during the 1980s and 1990s.
年代期间,经合组织国家年龄25岁以上国际移徙者增加人数中,接受过高等教育的移徙者接近一半。
Migrants with tertiary education constituted just under half of the increase in the number of international migrants aged 25 or over in OECD countries during the 1990s.
年代期间,亚洲国家不平等现象大幅度增加,而近期十年来一直居高不下。
Countries in Asia experienced a significant increase in inequality during the 1990s and inequality remained at a high level during the recent decade.
This same economic ideology, neoliberalism, informed the structural adjustment programmes undertaken in many African countries during the 1980s and 1990s.
单个国家的债务危机在1960年代并不常见,但1980年代和1990年代期间却变得屡见不鲜。
Debt crises in individual countries, uncommon in the 1960s, became frequent during the 1980s and 1990s.
年代期间,低收入群体中的儿童人数增加的一个原因是经济上困难的移民儿童增加。
One reason for the increase in children in low-income groups during the 2000s is an increase in economically challenged immigrant children.
年代期间,经输血感染肝炎的人愈来愈多,许多医生都开始寻找取代输血的疗法。
With the rise of hepatitis among transfusion recipients during the 1970's, many doctors began looking for alternatives to blood.
年代、1980年代以及1990年代期间泽西岛管区颁布的有关法令,其中规定降低公共住房部门的租金;.
Acts of the States during the 1970s, 1980s and 1990s, providing rent abatement to public sector tenants;
年代期间,跨越地域的合作也使普福尔茨海姆得以向格拉苏蒂供应Spezimatic所用表盘。
During the nineteen sixties, cross-border cooperation also allowed Pforzheim to deliver dials to Glashütte for the Spezimatic.
年代期间,塞舌尔有两位女大使,其中一位为驻美国大使,另一位为常驻法国大使。
During the 80' s, Seychelles had two woman ambassadors, one serving in the USA and one resident Ambassador accredited to France.
During the 1990s, he provided the political opposition with financial and other support, and was a personal friend of Viktor Gonchar, a prominent opponent of Belarus President Alexander Lukashenko.
年代期间,在西印度洋开始进行围网捕捞金枪鱼作业,欧洲国家以前在大西洋捕鱼的渔船转向该区域。
A purse-seine fishery for tunas began in the west Indian Ocean during the 1980s, when vessels from European States, which had fished in the Atlantic moved to that region.
During the 1990s, following the contours of the peace negotiations, Israeli forces imposed periodic" closures" of the Palestinian areas, usually in response to suicide bombings inside Israel.
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