常見例句Sunflowers always turn with the sun because of their heliotropism. 向日葵的向光性使它總是隨著太陽的方向而移動。Heliotropism A form of phototropism in which flowers move to point toward the sun, tracking it as it moves across the sky. 向日性:趨光性的一種類型,植物的花在一天內(nèi)朝向太陽,并隨著日光照射的方向而轉(zhuǎn)移方位。Recent explanations for heliotropism of sunflower 葵花向陽原因新解析negative heliotropism 背日性,負向日性positive heliotropism 正向日性Flower heliotropism 花向日性 返回 heliotropically