This is the 6400th most frequent Chinese word.
拉长
"拉长" means "to lengthen" or "to extend."
The word '拉长'(stretch) is used here to describe the action of elongating the rope physically.
他拉长了绳子以符合使用的长度。
He stretched the rope to match the required length.
The word '拉长'(extend) is used to metaphorically express the extension of time.
为了解释这个复杂的话题，老师拉长了讲解时间。
To explain this complex topic, the teacher extended the explanation time.
The word '拉长'(prolong) is used figuratively to describe the extension of the feeling of anticipation.