I don't know what the meaning of the betel leaf and betel nut are.

我不知道那个荖藤和槟榔的意义是什么？

youdao

A Burmese family buys paan, a ground-up mixture of betel nuts and other spices wrapped in a betel leaf, from a street vendor near the Botataung Pagoda in Yangon, Myanmar, on Dec. 6, 2010.

缅甸仰光，一户缅甸家庭正在波大通宝塔附近的摊位上购买“帕腤”——这是一种用槟榔叶包裹着槟榔果与其它香料的混合食物。摄于2010年12月6日。

youdao

For chewing a small piece of the areca palm 's fruit is wrapped in a leaf of the betel pepper along with a pellet of lime to cause salivation and release the stimulating alkaloids.

咀嚼时，卷少许于蒟叶内，加少量酸橙共嚼，以促使唾液分泌和放出刺激性的生物碱。

youdao

Farhana Rejwan, from east London, has been chewing tobacco wrapped in betel leaf for over 50 years and has struggled to give it up.

BBC: Poor labelling of chewing tobacco hides risks

Mr Ondaatje has filled the house with the collection of Sri Lankan antiquities he had begun as a schoolboy old maps and prints of Colombo, talipot palm-leaf manuscripts, bird paintings from the Calcutta school, pre-colonial furniture, betel-nut cutters, swords, knives and firearms.

ECONOMIST: Museum sponsorship