by twos and threes
基本解释
- 三三两两地；零零星星地
英汉例句
- The came to school by twos and threes.
他们三两成群地来到了学校。 - The students arrived here by twos and threes.
学生们三三两两地到这儿了。
chunhua1989.com - After we worked on adding and subtracting my girls added more numbers to the line and jumped by twos and threes, working on skip counting.
我们学习了加减法后，孩子们又在数字列上加进许多新的数字，并隔2，3个数字跳来学习跳跃计数。