干旱

• The drought periods under these conditions tend to be more injurious to the trees .
  旱季干旱伤害果树较大。
• Terpenoids are more prevalent in some arid or semiarid climates .
  萜类在某些干旱或半干旱气候条件下较为普遍。
• In dry areas an organic sheet may be helpful and improve survival .
  在干旱地区用有机质纸张可能有助，能提高成活率。
• Under conditions of water stress, leaf turgor decreases and stomata close .
  在干旱的条件下，叶子的膨压减少而气孔关闭。
• It would be sensible to deliberately choose orchard sites which enjoy dry summers .
  考虑选择夏季干旱的地方作为种子园园址是有道理的。
• The symptoms of a country destitute of water gave food for reflection to dr. fergusson .
  这干旱的种种征兆更加重了费尔久逊博士的心事。
• Meteorologists say we are facing twenty years of colder weather and regional droughts .
  气象学家说我们面临着二十年较寒冷的天气和地区性干旱。
• Figure 4 depicts character convergence in different species using an example from an arid region .
  图4用干旱地区的一个例子描绘了不同种的性状趋向性。
• The rising demand for food has reduced the area fallowed in key dryland farming regions .
  日益增长的对粮食的需求，使主要干旱农业区的休耕面积大为减少。
• In 1931 and the following years, a series of terrible droughts were followed by dust storms .
  在1931年和其后的几年，连接发生严重干旱，接着便是大风沙暴。