It has been proved in practice that artificialreproduction of trichogramma is a safe, effective and economic method in control of corn borer.
利用赤眼蜂防治玉米螟是一项已被生产实践证明了的安全、有效、经济的生防措施。
2
Recent technological advances in reproduction, such as artificial insemination and in vitro fertilization, have increased the full income of women relative to men.
比如人工授精和体外受精，近来的生育技术进步使女性的总收入相对于男性增加了。
3
Goldfish breeding reproduction can be divided into two kinds natural reproduction and artificial propagation.