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牙齒亮晶晶 放心笑嘻嘻 Keep that Smile Shining Bright (上)

Keep that Smile Shining Bright
#混合題型 #健康
8/24 解析英語

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牙齒亮晶晶  放心笑嘻嘻:) Keep that Smile Shining Bright
牙齒變色指的是牙齒顏色隨著時間變得較不潔白的過程。
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混合題型

        Tooth discoloration refers to the process of your teeth’s color becoming less white over time. If you are experiencing tooth discoloration, no harm done. It is a common process that occurs as humans age and affects only the surface of teeth. Nevertheless, unnatural discoloration can also happen. It is worth knowing that tooth discoloration can be prevented or, at the very least, controlled. To understand how to prevent this condition, we must first get to the bottom of the causes.

        Broadly speaking, the causes of tooth discoloration can be divided into two categories: extrinsic and intrinsic causes. Extrinsic causes are factors coming from outside the body and are primarily food, drink, and tobacco. Common food and drink culprits include tea, coffee, red wine, chocolate, and blueberries. The deep colors of these items stick to the outer layer of teeth and can gradually cause staining if teeth are not cleaned well. Tobacco can lead to particularly severe staining. Nicotine and tar in tobacco are responsible for turning teeth into an unhealthy-looking brown or yellow. Research has revealed that generally, tooth discoloration is more prevalent among smokers than non-smokers.


 
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單字片語整理

Words in Use
process
[ˋprɑsɛs]
vt. 處理
n. 過程
unnatural
[ʌnˋnætʃərəl]
a. 不自然的
category
[ˋkætə͵gorɪ]
n. 種類;範疇
culprit
[ˋkʌlprɪt]
罪魁禍首,問題的起因
layer
[ˋleɚ]
n. 層
vt. 按層排列 / 擺放
staining
n. 染色
severe
[səˋvɪr]
a. 嚴厲的;十分嚴重的
prevalent
[ˋprɛvələnt]
adj. 盛行的,流行的
decay
[dɪˋke]
vt. & vi. & n. 腐爛,侵蝕 (作名詞時為不可數名詞)
medication
[͵mɛdɪˋkeʃən]
n. 藥物
hygiene
[ˋhaɪdʒin]
n. . 衛生(不可數)
discoloration
[͵dɪskʌləˋreʃən]
n. 變色
extrinsic
[ɛkˋstrɪnsɪk]
a. 外在的
nicotine
[ˋnɪkə͵tin]
n. 尼古丁
tar
[tɑr]
n. 焦油(菸草燃燒時產生的黑色黏稠液體)
antibiotics
[͵æntɪbaɪˋɑtɪks]
n. 抗生素(恆用複數)
whitening
[ˋhwaɪtnɪŋ]
n. 美白,變白
Practical Phrases
get to the bottom of
 對⋯⋯追根究底,弄清⋯⋯

Although the police were trying to get to the bottom of the case, they couldn't find any clues.
雖然警方試圖弄清該起案子,卻找不到任何線索。

divide A into B
 將 A 分成 B

Mr. Lin divided the class into two groups.
林老師把全班分成兩組。

stick to
 堅守……

Whatever I do, I stick to my principles.
不管做什麼事,我都會緊守原則。

be responsible for
 負責……,為……負責

Adults are responsible for their actions.
成年人要為自己的行為負責

get rid of...
 避開⋯,擺脫⋯

For me, singing at a KTV with friends is the best way to get rid of depression.
對我來說,和朋友去 KTV 唱歌是擺脫沮喪最好的方法。

be effective in
 對⋯⋯有效

Aspirin is very effective in relieving headaches.
阿司匹靈緩解頭痛非常有效

over-the-counter
 (藥品)非處方的
no harm done
 (某事沒有造成傷害)不要擔心
at the (very) least
 至少
broadly speaking
 概括來說,總的來說

回饋與建議

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作者

Mark Darvill
Mark Darvill
Don’t let the noise of other people’s opinions drown your inner voice.
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