Count the number of primitive operations in each step.

数一数每一步中的基本操作,好的，如果我们看看这段代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

At its peak, hundreds of firms across the country were making something like two million bicycles a year, which was an astonishing number at the time given the primitive state of mass production.

FORBES: A Comic Look At The 1890s Bicycle Boom

An unknown number of hikers and campers may have weathered the Thursday night storm on the dozens of trails and isolated primitive camping sites in the most hard-hit western portion of the park, spokesman Carey Jones said Friday morning.

CNN: Crews search Smoky Mountain wilderness after deadly storm