Usually I make custard pudding with isinglass, but the grocer in Walden didn't have any, so today I'm going to have to use gelatine.

通常制作卡士达布丁时我会使用鱼胶但是今天杂货店买不到他，所以今天我会使用吉利丁来制作。

He kept the isinglass curtains snapped to the windows to cut off the draughts, and tight around his neck he wore his gray wool shawl.

他让鱼胶窗帘紧扣在窗户上以隔绝气流， 他的脖子上紧紧地围着灰色羊毛披肩。