Droughts still occur frequently in semiarid areas.

半干旱地区旱灾仍频频发生。

The government decided to plant forests in this semiarid area.

政府决定在这个半干旱地区造林。

The natural vegetation in semiarid regions is mainly grassland.

半干旱地区的自然植被主要是草原。

They come from the semiarid regions of Australia.

它们来自澳大利亚的半干旱地区

The region is semiarid to arid in overall climate.

这个地区总体上是半干旱至干旱气候。

The region is semiarid to arid in overall climate .

这个地区总体上是半干旱至干旱气候。

North China is situated in arid and semiarid regions.

华北地区位于干旱和半干旱地区。

North China is situated in arid and semiarid regions.

摘要华北地区位于干旱和半干旱地区。

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。