Out of date tea leaves will be brittle and dry, rather than lush and aromatic.

过期的茶叶会变得干燥易碎，口感与味道都会明显下降。

youdao

Any of various prickly climbing plants of the tropical American genus smilax having aromatic roots and heart-shaped leaves.

任何热带美洲菝葜属多刺攀援植物，有芳香的根和心形叶子。

youdao

Biennial yellow-flowered Eurasian plant having aromatic leaves used as carminative or flavoring agent; widely cultivated especially as green manure or cover crop.

两年生欧亚植物，花黄色，其叶芳香，用做祛风剂或调味品；广泛栽培，尤其作绿肥或覆盖作物。

youdao

They then compare it to one of their biodegradable tea bags, with its aromatic whole leaves.

FORBES: Tea Party

More unusual ingredients, such as tamarind paste and aromatic curry leaves, can be found in Indian grocery stores or specialty shops.

NPR: Indian Food: Eating in Technicolor