According to the psychologist, the first word spurt usually occurs around 18 months of age.
根据心理学家所讲，第一个单词通常在其18个月时发出。
"Spurt" is the word used to describe a short burst of activity, something that happens in a hurry.
这个词用来形容一种爆发式的增长，一些急速发生的事情。
"Spurt" is the word used to describe a short burst of activity, something that happens in a hurry.
这个词用来形容一种爆发式的增长，一些急速发生的事情。
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