The tooth enamel is softened by the acid and brushing straight after will wear the teeth down.
酸性物质会软化牙釉质，立即刷牙会磨损牙齿。
"She looked at me and said, 'If only I had teeth down there,'" recalled Ehlers, who was a 20-year-old medical researcher at the time.
“她看着我，然后说：如果那里有一排牙齿、”埃勒斯回忆。
Likely cause: Known as bruxism, teeth-grinding varies from jaw clenching to ferocious grinding that wears teeth down to stumps. It is usually due to genetics or stress.
可能的诱发原因：虽说都叫磨牙症，但磨牙的情况各不相同，从牙关紧闭到疯狂磨牙直到牙齿只剩残根。磨牙通常是由遗传或压力造成的。
Poor tooth brushing techniques can harm your teeth - if you really scrub your teeth too hard, you will wear the sides of your teeth down, leaving V-shaped defects near the gum margins.
不恰当的刷牙方法会损害牙齿，如果你真的太用力刷牙，就会磨损牙齿边缘，在牙龈缘附近形成V字形缺口。
Through Hook's teeth came the answer, "You would have to swear, 'Down with the King.'"
回答从胡克的牙缝里冒了出来：“你得发誓，‘打倒国王。’”
Pipe smokers sometimes wear down the tips of their teeth where they grip their pipes.
抽烟斗的人用牙齿咬住烟斗，有时会把牙齿尖磨平。
In the final unreasoning assault I overpowered the child's neck any jaws. I forced the heavy silver spoon back of her teeth and down her throat till she gagged.
在最后失去理性的“战斗”中，我控制了女孩的脖子和下巴，我强行将沉重的银勺从她的牙后面伸到嗓子直到她作呕。
When cubs are hungry, they produce a grating fingernails-on-blackboard sound, with their lips pulledback from their teeth, to encourage their mother to lie down so they can nurse.
当幼仔饥饿时，它们会将嘴唇向牙齿后拉，发出指甲挠抓黑板般的尖锐叫声，以促使它们的母亲躺下来喂奶。
Grant spent seven hours trying to draw out the fish before he settled down on the bank to take a nap, having first passed the line through his teeth to make sure it did not escape.
格兰特花了七个小时试图在岸边停整午憩之前捕获它，接下来疲劳所致，不得已，他只好头一次把鱼线穿过自己的牙缝以保证它不会逃脱。
Jamie nodded, keeping his gaze down, hoping Dad didn't notice the way he gritted his teeth when he heard his older brother's name.
吉米点点头，把头低了下去。听到哥哥名字的时候他忍不住咬了咬牙，他可不希望被爸爸看到。
NASA said the crew had sent down video and photographs of a small star-shaped gear with two broken teeth. Experts were trying to determine whether it was related to the problem.
NASA说乘员已经下传了有关一个断了两个齿的小型星型齿轮的视频和图像。
No, I was told the curate should have his — teeth dashed down his throat, — if he stepped over the threshold — Heathcliff had promised that!
不教了，我听说副牧师要是跨进门槛的话，就要——把他的牙打进他的——喉咙里去——希刺克厉夫答应过的！
Saliva acts as a barrier, protecting the teeth by neutralising acidic foods such as oranges, and the acid produced by bacteria as they break down foods.
而唾液正像一道保护牙齿的屏障，把橘子等酸性食物以及细菌分解食物产生的酸性物质中和掉。
To clean the biting or chewing surfaces of the teeth, hold the brush so the bristles are straight down on those surfaces.
为了清洁牙齿切端或咬合面(咀嚼食物的那一面)握牙刷是刷毛与这些面垂直。
Likewise, the sale of gold is regulated, so those who melt it down for false teeth won't get licenses anytime soon.
同样地，黄金交易也是被管制的，所以那些融化黄金做假牙的人也不会很快获得执照。
She set about whittling down the likely candidates from the 150 who applied to a list short enough to interview personally - eliminating the ones who reassured her that they still had their own teeth.
她着手从150名提出申请的可能候选者中进行大幅删减，列成足够短的名单已备相亲——排除了那些向她保证自己不全是假牙的人。
Today, me and my girlfriend were watching a movie late at night. I went down on her, and about 10 minutes into it my dad walks in and says, "Son, it's late, you should brush your teeth.
今天，我和我女友看电影到深夜，我正舔的火热，大概有10分钟，老爸进来说：“儿子，太晚了，你该刷牙了。”
It could be as simple as letting the cat out, turning out the lights, turning down the heat, washing your face, and brushing your teeth. Or it could be a series of yoga or meditation exercises.
这些事可以简单到放猫咪出门、关灯、关暖气、洗脸刷牙，也可以是瑜伽或冥想。
When he had things arranged on the table, he pulled the drill toward the dental chair and sat down to polish the false teeth.
桌上东西码好了，他就把牙钻拉到牙科椅边上，坐上椅子磨起假牙来。
Before I brush my teeth for bed, I write my top 10 list down in my trusty notebook.
在我刷牙睡觉前，我都会在我的笔记本上写下十项待办事宜。
They grow up and they grow down and grab the earth between their hairy toes and bite the sky with violent teeth and never quit their anger.
它们向上生长也向下生长，用它们须发样的脚趾攥紧泥土，用它们猛烈的牙齿噬咬天空，怒气从不懈怠。
The rain drummed on the eaves of her garden fiat at cuffe parade. she listened to its dismal threnody tapping her teeth with her red pencil and watching streams snaking down the windowpanes.
雨鼓点般地落在她卡夫特帕拉德花园住宅的屋檐上，她听着忧伤的挽歌，一边用红色铅笔敲着牙齿，一边看雨水汇成的溪流从窗玻璃蜿蜒而下。
"Well," he whispered, "I was walking down this road, armed to the teeth."
“这么回事，”他小声地说，“我沿着这条路走着，武装到牙齿。”
Today, me and my girlfriend were watching a movie late at night. I went down on her, and about 10 minutes into it my dad walks in and says, "Son, it's late, you should brush your teeth."
8：今天，我和我女友看电影到深夜，我正舔的火热，大概有10分钟，老爸进来说：“儿子，太晚了，你该刷牙了。”
Today, me and my girlfriend were watching a movie late at night. I went down on her, and about 10 minutes into it my dad walks in and says, "Son, it's late, you should brush your teeth."
8：今天，我和我女友看电影到深夜，我正舔的火热，大概有10分钟，老爸进来说：“儿子，太晚了，你该刷牙了。”
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