He was so absorbed in the research that he had mot time left for recreational activities.
他专心致力于研究工作, 连文娱活动的时间都没有了。
A corridor of undeveloped land, as along a river or between urban centers, that is reserved for recreational use or environmental preservation.
绿色走廊沿河或在两个城市中心区之间的由未开发土地形成的走廊, 为市民休闲娱乐或环境保护而保留
A piece of land with few or no buildings within or adjoining a town, maintained for recreational and ornamental purposes.
公园城镇内部或邻近区域的一块留作娱乐或美化之用的有很少或没有建筑的土地
