A grey recurrent population improvement of wheat was suggested by combining the grey breeding method with the wheat dwarf male-sterile technology.

将灰色育种方法与矮败群体改良方法相结合，提出了小麦灰色轮回群体改良方法。

youdao

Over 20% of the population have recurrent mouth ulcers at some time in their lives.

超过20 %的人口有经常性的口部溃疡，在一些时间在他们的生活。

youdao

When the same recurrent selection porgram was used in various population, the greater the coefficient of variation of the population, the greater the genetic progress it made.

不同群体采用同一种轮回选择方案，表现出变异程度大的群体，选择的遗传进展也大。

youdao

For a country whose population is still overwhelmingly rural, and which throughout its history has experienced recurrent food shortages, such an omission indicates a superficial analysis of Indonesia's economy.

ECONOMIST: Bitter pill