一团粉尘在他周围扬起。The powdery dust rose in a cloud around him.暴风雪夹着大团的积雪吹过湖面。A blizzard was blasting great drifts of snow across the lake.他一把扯下那女孩的照片，将它揉成一团。He tore down the girl's photograph, and crumpled it into a ball....
人造丝比天然丝更易起皱 吗 ?Does artificial silk crease more easily than natural silk?她把起皱的桌布熨平了.She smoothed down a wrinkled tablecloth.这种纸容易起皱.This kind of paper crumples easily....
腐殖酸通常被看作是芳烃化合物的聚合物.Humic acids are usually regarded as polymers of aromatic compounds.科学家们培殖了大量的普通霉.Scientists grow large quantities of common mould.腐殖化过程与分解过程均受到抑制.Both humification and decomposition are impeded....