pyrethrum flowers造句
例句與造句
- The company produced pyrethrin insecticides but force to close in mid-1960 with government restrictions on the importing of pyrethrum flowers.
- Local officials cite Suffolk County's policy of augmenting larvicides with the pesticide resmethrin, derived from the pyrethrum flower, as evidence that sprays can be safe.
- The young boy looked askance at what his first day's work was worth : three cents for the long hours he spent picking pyrethrum flowers used to make insecticide.
- The Carrs settled in the Belgian Congo in 1949, and after their divorce Rosamond settled in Mugongo, Rwanda to run a plantation growing pyrethrum flowers to produce pyrethrin, an organic insecticide sought the world over.
- There, in the village of Mugongo, 12 miles northwest ov asenyi, she oversaw a staff of nearly 300 people and constantly chased away the elephants who grazed on the white pyrethrum flowers and later the flowers she grew for export.
- It's difficult to find pyrethrum flowers in a sentence. 用pyrethrum flowers造句挺難的