感叹句
中文翻译：这是最后
同义词：
['finally', 'at last例句：1. This is it', "I've decided to give up myjob and start a new business.（这就是了，我决定放弃工作开始创业。）"]
例句：
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1. This is it,I've decided to give up myjob and start a new business.
这就是了，我决定放弃工作开始创业。
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2. Afterall the hard work, this is it—we finally have a breakthrough.
经过所有的努力，这就是了——我们终于取得了突破。
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3. This is it, we're done with the project for now.
这就是了，我们现在就结束这个项目了。