There is good evidence that if baby is given a bottle of formula while lying flat, the formula can get into the Eustachian tubes and middle ear and cause an infection.
有证据表明如果瓶喂配方奶给平躺着的宝宝，配方奶可能进入宝宝的耳咽管和中耳，进而引起感染。
EARS: the membranes covering the inner ear should be either flat or slightly concave; ear abscesses are very common and can have fatal consequences if treatment is not obtained.
耳鼓：内耳孔上覆盖的耳鼓膜往往是平的或者微微凹陷；耳鼓鼓胀很常见，同时如果不经过及时治疗往往也很致命。
His voice was oddly pleasant to the ear, the well-modulated voice of a gentleman, resonant and overlaid with the flat slow drawl of the Charlestonian.
他那声音，她听来觉得分外愉快，是一个上等人的节奏抑扬的调子，响亮而带有查尔斯顿人的平稳、和缓、悠长的韵味。
Even the best hearing aid will sound "flat" or "dull" when worn in only one ear.
即使是最好的助听器，将良好的“单位”或“平淡”时，佩戴在只有一个耳朵。
Imagine tapping out text messages on a device the size of an index card and as flat as a piece of paper, then folding it in thirds to hold it to your ear and make a phone call.
设想一下以下的情景： 你在一台小如名片、薄如纸张的手机上发完短消息后，把它三折后放入耳边又能打起电话。
The forehead should be flat across from ear to ear.
额头在两耳间成扁平状。
The forehead should be flat across from ear to ear.
额头在两耳间成扁平状。
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