n.

　　腐爛;腐朽 the process or result of being destroyed by natural causes or by not being cared for

　　衰敗，衰退 the gradual destruction of a society, an institution, a system, etc.

　　同義詞

　　n. decline，decomposition，disintegration，radioactive decay

　　v. crumble，decompose，delapidate，disintegrate

　　參考例句

　　1. The tree began to decay as soon as it was cut down.

　　樹一被砍倒，它就開始腐朽。

　　2. I leave this prison of decay.

　　我離開這座腐爛的監獄。

　　3. One major problem is tooth decay.

　　一個主要的問題是蛀牙。

　　參考例句

　　1.V-I When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process. 腐壞

　　例：The bodies buried in the fine ash slowly decayed.

　　埋在細灰里的尸體慢慢腐爛了。

　　2.N-UNCOUNT Decay is also a noun. 腐壞

　　例：When not removed, plaque causes tooth decay and gum disease.

　　牙斑沒有清除就會導致蛀牙和牙齦疾玻

　　3.decayed ADJ 腐壞的

　　例：Even young children have teeth so decayed they need to be pulled.

　　連幼兒也有這么嚴重的齲齒，需要拔掉。

　　4.V-I If something such as a society, system, or institution decays, it gradually becomes weaker or its condition gets worse. 衰敗

　　例：In practice, the agency system has decayed. Most agents now sell only to themselves or their immediate family.

　　實際上，這種代理制已經衰退。現在，大多數 代理人 都只把產品賣給自己或親近的家人。

　　5.N-UNCOUNT Decay is also a noun. 衰敗

　　例：There are problems of urban decay and gang violence.

　　存在都市衰敗和黑幫暴力問題。

　　常見用法

　　用作動詞

　　Naomi: Your entrie body is begining to decay.

　　直美:你的整個身體都在衰退。

　　What made the Roman Empire decay?

　　羅馬帝國為何衰亡?

　　The dampness of the climate decayed the books.

　　氣候潮濕，把書都霉壞了。

　　The vegetables have begun to decay.

　　那些蔬菜已開始腐爛。

　　用作名詞

　　His mental decay is distressing.

　　他的智力衰退令人苦惱。

　　Bacteria complete the job by causing decay.

　　細菌通過引起腐爛而完成這個變化。

　　The dentist could detect no decay in her teeth.

　　牙醫檢查了她的牙，未見有齲齒。

　　n.

　　腐爛;腐朽 the process or result of being destroyed by natural causes or by not being cared for

　　衰敗，衰退 the gradual destruction of a society, an institution, a system, etc.

　　同義詞

　　n. decline，decomposition，disintegration，radioactive decay

　　v. crumble，decompose，delapidate，disintegrate

　　參考例句

　　1. The tree began to decay as soon as it was cut down.

　　樹一被砍倒，它就開始腐朽。

　　2. I leave this prison of decay.

　　我離開這座腐爛的監獄。

　　3. One major problem is tooth decay.

　　一個主要的問題是蛀牙。

　　參考例句

　　1.V-I When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process. 腐壞

　　例：The bodies buried in the fine ash slowly decayed.

　　埋在細灰里的尸體慢慢腐爛了。

　　2.N-UNCOUNT Decay is also a noun. 腐壞

　　例：When not removed, plaque causes tooth decay and gum disease.

　　牙斑沒有清除就會導致蛀牙和牙齦疾玻

　　3.decayed ADJ 腐壞的

　　例：Even young children have teeth so decayed they need to be pulled.

　　連幼兒也有這么嚴重的齲齒，需要拔掉。

　　4.V-I If something such as a society, system, or institution decays, it gradually becomes weaker or its condition gets worse. 衰敗

　　例：In practice, the agency system has decayed. Most agents now sell only to themselves or their immediate family.

　　實際上，這種代理制已經衰退。現在，大多數 代理人 都只把產品賣給自己或親近的家人。

　　5.N-UNCOUNT Decay is also a noun. 衰敗

　　例：There are problems of urban decay and gang violence.

　　存在都市衰敗和黑幫暴力問題。

　　常見用法

　　用作動詞

　　Naomi: Your entrie body is begining to decay.

　　直美:你的整個身體都在衰退。

　　What made the Roman Empire decay?

　　羅馬帝國為何衰亡?

　　The dampness of the climate decayed the books.

　　氣候潮濕，把書都霉壞了。

　　The vegetables have begun to decay.

　　那些蔬菜已開始腐爛。

　　用作名詞

　　His mental decay is distressing.

　　他的智力衰退令人苦惱。

　　Bacteria complete the job by causing decay.

　　細菌通過引起腐爛而完成這個變化。

　　The dentist could detect no decay in her teeth.

　　牙醫檢查了她的牙，未見有齲齒。