devil grass
Shaped like the letter Y.
plural of birlaw
(philosophy, logic) A valid form of argument in which the antecedent of a conditional proposition is infirmed, thereby entailing the infirmation of the consequent. Modus tollendo tollens has the form:
Bermuda grass, Cynodon dactylon.
古いゴルフ場は徐々にバミューダグラス（学名：Cynodon dactylon）に侵され、フェアウェイが埋まり、維持管理がとても難しくなった。
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