通过回归分析求出不同农药对2种草坪草根长与茎长的EC50值；并把30种农药对2种草坪草的敏感性进行比较。

Through regression assaying, the root length and shoot length EC50 were made out respectively, and then compared the sensitivity of 2 grasses seedling to 30 pesticides.

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这种植物的茎上长有绿色细长条纹。

The plant's stem is marked with thin green longitudinal stripes.

《牛津词典》

它的长茎盘在三角墙上，墙上挂着一个小钟。

The long stems twined round the gable, on which there hung a small bell.

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