中文：

商业上映是指影片在影院、院线等商业渠道进行放映，以获取票房等商业利益。然而，有些影片在商业上映后却遭遇了票房惨淡、口碑崩塌等失败。这些失败的例子说明了一些问题。

首先，影片的质量是商业上映成功的关键因素。如果影片的质量不过关，观众自然不会买账。其次，影片的定位和宣传也是影响商业上映的重要因素。如果影片的定位和宣传不准确或者不到位，观众可能不会对它产生兴趣或者误解。最后，影片的竞争也是影响商业上映的一个因素。如果同期有其他更优秀的影片上映，观众可能会选择去看其他影片。

商业上映的失败说明了一个道理：只有不断提高影片的质量，精准定位和宣传，才能在竞争激烈的市场中获得成功。同时，这也提醒了投资者和制片人在选择项目时要更加谨慎，不能只看重短期的经济利益，而忽略了长远的发展。

英文：

Commercial release refers to the film being screened in cinemas and theaters to obtain box office and other commercial benefits. However, some films have encountered failures such as poor box office results and reputation collapse after commercial release. These failures illustrate some problems.

Firstly, the quality of the film is the key factor for the success of commercial release. If the quality of the film is not up to par, the audience will not accept it. Secondly, the positioning and promotion of the film also have a significant impact on commercial release. If the positioning and promotion are inaccurate or inadequate, the audience may not be interested in it or misunderstand it. Finally, competition is also a factor that affects commercial release. If there are other better films released at the same time, the audience may choose to see other films.

The failure of commercial release illustrates a lesson: only by continuously improving the quality of films, accurately positioning and promoting, can we succeed in a fiercely competitive market. At the same time, it reminds investors and producers to be more cautious when choosing projects and not just focus on short-term economic benefits while ignoring long-term development.