Bounded occurrence
[计] 约束出现
🧩 词语组成解析
a. 有界限的
🗣️ 情景例句
Hello, it's good to see you again.
很高兴又见到你。
Help yourself.
请便！
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。