| 单词 | 光周 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔photoperiodism〕The response of an organism to changes in its photoperiod, especially as indicated by vital processes.光周期现象：生物在暴露于阳光期间对变化产生的反应，尤指通过生物过程显示出来的反应美国传统〔photoperiod〕The duration of an organism's daily exposure to light, considered especially with regard to the effect of the exposure on growth and development.光周期：有机物每天暴露于阳光的时间，着重考虑的是暴露于阳光对生长和发展的影响美国传统 |
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