A leaflet is a little book or a piece of paper containing information about a particular subject.
例句
Campaigners handed out leaflets on passive smoking.活動人士派發了有關被動吸煙的宣傳頁。...a leaflet called 'Sexual Harassment at Work'.名為《工作中的性騷擾》的小冊子
VERB
在（某處）散發傳單（或小冊子）
If you leaflet a place, you distribute leaflets there, for example by handing them to people, or by putting them through letter boxes.
例句
We've leafleted the university today to try to drum up some support...我們今天在大學散發了傳單，希望能爭取到支持。The only reason we leafleted on the Jewish New Year was because more people than usual go to the synagogue on that day.我們在猶太新年派傳單，純粹是因為那天去猶太教堂的人比平日多。
英漢詞典釋義
n.
傳單, 散頁印刷品;嫩葉
He picked up a leaflet about care of the teeth.他拾起一張宣傳保護牙齒的傳單。