Periodontal disease

[醫] 牙周病

?? 詞語組成解析

periodontal
a. 牙齒周圍的, 齒根膜的, 牙周病學的\\n[醫] 牙周的, 牙周膜的
disease [d?'ziz]
n. 疾病;弊端;不安; vt. 傳染;使…有病;
dis(apart)+ease→疾病

??? 情景例句

I'll get through this work by noon.
我會在中午以前完成這項工作。
What would you like to do this weekend?
這周末你打算做什么？
He marked all the bees that came to the nearby feeding place blue, and all the bees that went to the faraway place were marked red.
他把所有飛來近處喂食點的蜜蜂標上藍色，飛往遠處喂食點的蜜蜂標上紅色。
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