4.Every Sunday, they disport themselves either in the parks or in the mountains.
每周日他们或去公园或去。
5.I watched the climbers come down into the valley.
注视着者下到谷里去了。
6.The climber fell down a precipice.
者跌下了悬崖。
7.When the climbers looked back, they saw that two uninvited visitors had joined on.
登者回头一望, 看见两个不请自来的游客在他们一起。
8.The climbers slowly ascended the mountain.
运动员慢慢地登上了这座。
9.The climb will exhaust the boys.
会使那些男孩们疲惫不堪的。
10.Tourists can CROSSLINE hiking, nature viewing scenery, can also rowing boats, fishing pastime.
旅游者既可、观赏大自然风景,也可以划船游艇、钓鱼消遣。
11.The paper analyses that flavone's total content measuring of Parthenocissus tricuspidate is extracted by scorbutic extractor and Cohobation method, measured by spectrophotometer.