the project became so expensive that we had to pull out
这个项目耗资太大，我们不得不退出
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The project became so expensive that we had to pull out.
这个项目变得耗资巨大，我们只得退出。
《牛津词典》
The project became so expensive that we had to pull out of it.
这个计划耗资太大，我们只好退出。
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