Even in an age of historic underutilization of the labor force, the laws of supply and demand apply.

即使是在一个历史性的劳动力利用不足的时代，关于供应与需求的法律仍然适用。

This leads to the underutilization of critical assets simply because they might not be readily available.

这就导致了紧急资产的利用不充分，而原因只是因为它们有可能不可用。

Even for similar devices such as PDAs and advanced smart phones, establishing portability between the two often poses a strain to one device and underutilization of the other.

即使对于类似的设备(如pda和高级智能电话)，在两者间建立可移植性也常常使一种设备超负荷而另一种设备利用不充分。