Equidensitometry
等密度测量
🗣️ 情景例句
I'm worried, Philip.
我很担心， Philip。
My father used to smoke, but now he doesn't.
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These days, advertisers not only offer free samples, but free cars, free houses, and free trips round the world as well.
目前，做广告的人不仅提供免费样品，而且还提供免费汽车，免费住房，免费周游世界。