This flashcard explains 'heliotropism,' a noun referring to the turning or bending of a plant part toward or away from the sun.
此闪卡解释了heliotropism，名词，意为向日性或趋日性。
| Front | heliotropism [heli;-o-;trop;-ism n.] |
|---|---|
| Back | n.向日性，趋日性 |
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