这个盒子小于那个盒子。

This box is less than that box.

我们的队伍人数小于他们的队伍。

Our team has less than their team.

这条裙子的价格小于五十元。

The price of this dress is less than fifty yuan.

这次考试的难度小于上次。

The difficulty of this exam is less than the last one.

激光的光束发散度小于1毫弧度。

The laser's beam divergence is less than 1 mrad.

两个部件之间的间隙小于一毫米。

The gap between the two parts is less than a millimeter.

空气中的尘埃颗粒小于10微米。

The dust particles in the air are less than 10 micrometers in size.

他的年龄小于十岁。

His age is less than ten years old.

在数学中，负号表示一个数小于零。

In mathematics, a negative sign indicates that a number is less than zero.

计算5的阶乘需要乘以所有小于等于5的整数。

To calculate the factorial of 5, you need to multiply all integers less than or equal to 5.