Typically, when there's something which is unclear you'll fill in the gap and figure out what the word is.

通常当你听到某些不清楚的单词时,你会填入间隔,并确认那个词是什么

耶鲁公开课 - 心理学导论课程节选

What you might do, for instance, is be sitting at a computer screen and you'll be given incomplete words to fill out "hos-" like "hos-" and you have to fill out this word.

例如，你可以，坐在一个电脑显示器前,你要补充一连串不完整的单词,例如补充完整。

耶鲁公开课 - 心理学导论课程节选