In the early 1930s, most theater owners installed new sound systems.

在20世纪30年代初，大多数影院都安装了新的音响系统。

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In fact, it was complex enough that only advanced users installed new plug-ins.

事实上，它复杂到只有高级用户才能安装新的插件。

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The mechanic installed new brakes.

修车工人装了新刹车。

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Payne said technicians found that seals on the hydrogen vent lines were out of alignment and they installed new ones to fix the leaks.

VOA: standard.2009.06.16

Although the revised plan involves anti-ballistic missiles installed at a former air base in Poland, defense experts say Moscow perceives the new project as less threatening to its security.

VOA: standard.2009.10.23

Vegas installed New England as a cautious 3-point favorite, but it feels like a hedge.

WSJ: This Game Won't Be Super Bowl XLII, Part II

Last year, they turfed out the managing director and installed new bosses.

ECONOMIST: Champagne

We took out old, unsafe playground equipment as well as installed new equipment from multiple fundraisers sponsored by the PTA in previous years.

WHITEHOUSE: Parental Involvement in Schools: The Key to Our Children's Success | The White House