行间
参考答案：
行，行走。间，间隙，孔窍。人之步趋谓之行，穴当跖趾关节之间隙中。
计算：1×（-3）=______．
There are about two ______ students in the newly built school.[ ]
A: thousand
B: thousands
C: thousand of
D: thousands of
