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1. I get very nervous because I'm using a lot of expensive equipment.

因为正在使用很多昂贵的设备，所以我非常紧张。

2. The case against is twofold: too risky and too expensive.

反对理由有两点：太冒险而且太昂贵。

3. They actually moved down from upstairs because the rent's that expensive.

他们确实从楼上搬到了楼下，因为房租太贵了。

4. Although they're expensive, they last forever and never go out of style.

尽管价格昂贵，但它们经久耐用，永不过时。

5. Retooling, or recasting new toy moulds, is a slow and expensive process.

更换机器或者重新铸造新的玩具模具都是一个耗费时间和财力的过程。