Proteins are made up of one or more polypeptides.
蛋白质是由一条或多条多肽链组成.
She was a famous pin-up model long before she made her dazzling film debut.
她早在惊艳的电影首秀之前就已经是一位著名的海报模特。
I made up for my lessons later.
我总是过后再补课.
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