On each deck is a wooden shed and all the paraphernalia of oyster cultivation: tongs and rakes, mesh-bags of oyster spat, wire trays.

每一块甲板都是木制的，所有的用具都是用来养殖牡蛎的：钳子，耙，一袋袋的牡蛎卵，镍网托盘。

youdao

A young oyster, especially one suitable for transplanting to another bed; a spat.

牡蛎苗，种牡蛎：小牡蛎，尤指适于移植至另一牡蛎繁殖场的；蚝卵。

youdao

Farms often use tiles as the foundations of their beds, but when given a choice spat seem to prefer oyster shells.

ECONOMIST: A dozen ocean-cleaners and a pint of Guinness, please

Having found one, it grows into a spat, which when seen beneath a microscope already resembles a tiny oyster, with the shape of a shell already visible.

ECONOMIST: A dozen ocean-cleaners and a pint of Guinness, please