transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth
a support placed at the end of a row of books to keep them upright (on a shelf or table)
structure consisting of a row of evenly spaced columns
structure consisting of a row of evenly spaced columns n
a locomotor organ consisting of a row of strong cilia whose bases are fused
not amount to a row of beans
无足轻重,微不足道
not care a row of beans
毫不在乎,毫不介意
on a row of stumps
在困难中, 处于窘境
