If you have the grain going the wrong way the paper will ripple, the fold will not be clean and the book will want to close itself.
如果把纸的纹路弄反了,纸就会起皱,折边也不整齐,书还总是会自己合上。
It has no advantage for close-growing vegetation such as lawns, pastures, or small grain crops.
对于像草坪、牧草、小粒谷物这些茂密的植物,滴灌则没有优点。
There was a close correlation among root senescence and flag leaf senescence and grain filling rate.
根系衰老与旗叶衰老、及与籽粒灌浆速率密切相关。
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