At nightfall, biologist Francisco álvares walks through the village of Pit?es das Júnias, in northern Portugal, greeting old friends.
傍晚时分，生物学家弗朗西斯科•阿尔瓦雷斯（Francisco Álvares）走进葡萄牙北部村庄皮特沃斯-达斯-朱尼奥斯(Pitões das Júnias)，与老朋友们打着招呼。
Some birds traverse the Sahara and the Mediterranean Sea in a one go, while others make a pit-stop in northern Africa before crossing.
有些候鸟一口气横穿撒哈拉沙漠和地中海，而有些则在穿越前在北非稍作休整。
In northern China, drought and soil erosion are very severe. Water storage pit irrigation is a kind of new irrigation method that solves the two problems in hilly region.
干旱和水土流失是我国北方山丘区存在的两个较为严重的问题，蓄水坑灌法便是针对这两个问题而提出的适用于山丘区果林灌溉的一种新的节水灌溉方法。
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