第二个动作是 「善用实况照片（Live Photo）」。
Once you have chosen a video, you can use the editing features in Canva to trim the video, flip it, and adjust its transparency.
，这一点在WPS官方版本下载中也有详细论述
Here's a complete synchronous pipeline — compression, transformation, and consumption with zero async overhead:
// ⚠️ 易错点2：循环条件写left <= n-1（会导致left+1越界），或把<=写成<（漏判相等的有序情况）