The tooth also had all the components of normal teeth, including enamel, crown and root, and connective fibers to fix it to bone.

培育的牙齿还具备正常牙齿的所有组成成分，包括釉质、齿冠和牙根，以及使其固定于骨头的结缔组织纤维。

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I guess it's for this reason that I love the Crown Pop-up sink stopper idea; the exposed top end stays clean while the root-ish tail end catches the hair and goop.

我想这也许是我为什么这么喜欢这款下水漏的原因吧。你看，暴露在外的上表面一直很干净而下面的像根一样的尾巴就会把头发截留下来了。

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Symptoms of Crown and Root Rot of Alfalfa.

苜蓿根和根颈腐烂病的症状。

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