Large brown seaweed of the order Laminariales.

• Often forming underwater forests along cold coasts.

大型褐藻，隶属海带目（Laminariales）。

• 常在寒冷海岸形成海藻森林。

Calcined seaweed ash formerly used to make glass and iodine.

• Also called kelp ash.

海藻经高温煅烧所得的灰，用于早期制玻璃和碘。

• 亦称海藻灰。

To gather or harvest kelp.

• Chiefly regional or historical.

采集或收割海带。

• 多用于方言或历史语境。