Once there, he enjoyed unusual stability, in part because his putative successors found that they were indeed replaceable, and in part because he helped Goldman make a huge amount of money.

他在此位置上不寻常的稳定性，部分是因为他潜在的接任者会发现他们将确实是位置不稳的，还有部分是因为他帮高盛赚了大笔的钱。

youdao

The interface part and extension rod, particularly important is the radial run-out accuracy, cantilever length, vibration performance and replaceable.

对接口部分和接长杆而言，特别重要的是径向摆动精度、悬臂长度、振动性能和可换性。

youdao

It is a user replaceable part and they expect the consumer to replace it when they have burn through it. (think ink-jet cartridge) These TVs are not designed to be on 6-8 hours a day but if you are going to buy one and use it as a primary TV, make sure you know how many bulbs the warranty will replace.

ENGADGET: HDTV Buying Guide: Extended Warranties HD