Ọkan, oparun jẹ igi, tabi koriko?Oparun jẹ ohun ọgbin gramineous perennial, kini o jẹ "gramineous"?Ko lati Waseda University!Hoe Wo ọjọ ọsan, "wo" tọka si iru ewebe gẹgẹbi iresi, agbado, nitorina oparun jẹ koriko, kii ṣe awọn igi.Awọn igi nigbagbogbo ni awọn oruka, ati oparun jẹ ṣofo, nitorina kii ṣe ...
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