1. In the days before electronic calculators, engineers and mathematicians would often use a slipstick to perform calculations.
在电子计算器出现之前，工程师和数学家们通常会使用计算尺进行计算。
2. My grandfather showed me his old slipstick calculator from when he was studying engineering in college.
我爷爷给我看了他上大学时使用的旧式滑尺计算器。