in twos and threes

They had three goals in the first half, and another two in the second.

他们在上半场进了三个球, 下半场又进了个。

Three vacations occur in the course of the year,viz,two weeks at Christmas,ten days at Easter and the usual two months in summer.

一年中有三个假,诞节周,复活节十天以及通常的个月暑假。

Though there was no difference in detection rate with the three antigens, the cell culture supernate antigen was superior to other two antigens in titre and line sharpness.

三种抗原在检出率上无差异,但细胞上清液制备的抗原在效价、沉淀线的清晰度方面优于种抗原。

In a duodenal ulcer, a long post parricidal interval of two to three hours offend exists before pain is apparent and it may then occur immediately before next meal.

十二指肠溃疡患者的疼痛症状，则往往经过餐后到三小时的较长间歇，才于下餐饭前出现发作。