1. 缺乏
2. 干旱（时期）
3. 旱灾
4. 不足
5. 旱季
6. 枯竭
7. 久旱
8. 长期干旱
9. 缺乏
10. （口）渴

1. 干旱(时期) (period of) continuous dry weather, especially when there is not enough water for people's needs

1. a shortage of rainfall;

   "farmers most affected by the drought hope that there may yet be sufficient rain early in the growing season"
   

2. a prolonged shortage;

   "when England defeated Pakistan it ended a ten-year drought"
   

1.久旱;旱灾
Adrought is a long period of time during which no rain falls.

e.g. drought and famines have killed up to two million people here.
旱灾和饥荒夺去了这里200万人的生命。
e.g. He told a press conference that Spain was suffering one of the worst droughts of the century.
他在记者招待会上说西班牙正遭受着本世纪最严重的旱灾之一。

1. 干旱：病毒 (Virus) 对人类的贡献植物的生产力受到各种环境压力(stress)的影响,例如冻害(freezing)、乾旱(drought)、淹水(flooding)等,而要忍受这些环境压力,有效的方法便是将保护性的蛋白或酵素利用基因转殖的方式转入植物的细胞中,

2. 旱灾：旱灾 (drought) 土壤水分不足.不能满足农作物和牧草生长的需要.造成较大的减产或绝产的灾害.旱灾是普遍性的自然灾害.不仅农业受灾.严重的还影响到工业生产.城市供水和生态环境.中国通常将农作物生长期内因缺水而影响正常生长称

3. drought

3. 旱：所谓乾旱(drought)是指一段较长时间内降雨不足的现象. 对於农业而言,乾旱直接影响了作物的产量. 台湾...

4. 干旱缺乏：drought engine 排水机 |drought 干旱;缺乏 |drought 干旱缺乏