Usually it has the date carved on it.

通常时间会被刻在地基上。

This lowers construction costs, enables offsite manufacturing and cuts build times.

这降低了设成本，使非现场制成为可能，并缩短了时间。

First, it is 600 years ago that the bell, a model was made in butter and beeswax.

首先，时间是600年前，大钟模具由黄油和蜂蜡制成。

It's thought the time capsule was first placed there in the 1795, when the building was constructed.

因此推测时间胶囊时间为1795年，也就是这座大楼时间。

And therefore, you've never built the time machine.

因此你从过时间机器。

It actually took them longer to construct than a real house.

实际上，它时间比房子还要长。

The sculpture was erected in Niteroi Beach in Rio de Janeiro state and took more than a week to build.

这一雕塑矗立在了里约热内卢倪德罗沙滩上，时间为期一周。

Just the throne took seven years to construct.

仅仅王座就花了 7 年时间。

Studies show that it took 100 000 people over 20 years to complete it.

研究表明它由10万人花费20多年时间而成。

Hayabusa took three years longer than planned after a series of technical problems.

在经历了一系列技术问题后，隼鸟号时间比原计划多了三年。

Researchers from the UCLA Samueli School of Engineering built the demonstration system in two years.

加州大学洛杉矶分校萨缪利工程学院研究人员花了两年时间了这个演示系统。

It took Noah Peck about three days to construct a wall he could scale.

诺亚·佩克花了大约三天时间才一座他可以用来攀登墙。

The Step Pyramid at Saqqara about a hundred years or so before the Giza Pyramids are built.

萨卡拉阶梯金字塔时间比吉萨金字塔早大约一百年。

So until we build a time machine, or at least some really good models, the jury is out.

因此，在我们时间机器或至少一些非常好模型之前，还没有定论。

It took five years to build.

它花了五年时间。

First thing we do, take six million bucks and build a time machine.

我们做第一件事, 就是拿出600万美元, 一台时间机器。

So let's imagine that I build a time machine for myself.

那么让我们想象一下，我为自己了一台时间机器。

You spent years building those bridges, why burn them now?

你花了数年时间那些桥梁，为什么现在要烧毁它们？

Took about two years to build and it's built to last for very long time.

花了大约两年时间，它可以持续很长时间。

It's like constructing all the buildings in a city at the same time.

这就像是在同一时间城市中所有筑。