某些植物受光影响而转向的特性；正趋光性(向光)或负趋光性(背光)。
某些植物受光影响而转向的特性；正趋光性(向光)或负趋光性(背光)。；趋日性；[化] 向日性
某些植物受光影响而转向的特性；正趋光性(向光)或负趋光性(背光)。
The property of some plants of turning under the influence of light; either positively (towards the light) or negatively (away from the light).
对太阳的定向反应
an orienting response to the sun
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