used to emphasize one's seriousness, determination, or truthfulness
我发誓, 我保证
如果他再骗我一次，我发誓，我就走人。
to speak convincingly or authoritatively about a subject, especially in a way that suggests knowledge, expertise, or confidence
说得头头是道, 讲得很有底气
那位顾问讲得很有底气，把战略说得像是很简单。
used to emphasize that something cannot be true or accurate
根本不是这么回事, 完全没这回事
他以为我希望项目失败，可完全没这回事。
to forcefully make a point in an argument or discussion to ensure that there are no misunderstandings
把话讲透, 把意思说清楚
她不断强调这一点，直到所有人都明白其中的风险。
used before stating the most important fact about a particular situation
说到底, 归根结底
说到底，这是你的决定，不是我的。
used before summarizing or stating most important facts of a situation
归根结底, 说到底
说到底，重要的是病人有没有好转。
the most important factor in an argument or a discussion that brings it to an end
关键点, 说到底
你可以怎么解释这些数字都行，但说到底，我们亏钱了。
to talk about something in a completely open and direct way
有话直说, 直截了当地说
她直截了当地说，这个提案不现实。
to deliberately delay or avoid talking about the main point
拐弯抹角, 不说重点
他拐弯抹角说了十分钟，才承认错误。
to avoid talking about the details of something that has happened and only give the main points
长话短说, 简单说
长话短说，我们迷路了，晚到了两个小时。
to get straight to the point or the most important part of a matter without wasting time on irrelevant details or preamble
直接进入正题, 别绕弯子
她直接进入正题，问那笔交易是否还算数。
a thorough explanation of how something happened
说来话长, 这里面故事很多
说来话长，但简单说就是合同从来没签。
used for saying that something has the same effect as another thing
实际上, 实质上
旧规则还写在那里，但实质上已经不再适用了。
the final part of a joke or a humorous story that is intended to make the audience laugh or surprise them with a clever twist or unexpected ending
笑点包袱, 最后的笑料
她终于抖出包袱时，大家都笑了。
