When you do this, the file will be moved to the trash, but for the file to be deleted permanently, you'll need to click the trash, select the drop down menu near the top and then select empty trash.
當你這樣做的時候,文件會被移動到垃圾桶,但是要想永久刪除文件,你需要點擊垃圾桶,選擇頂部附近的下拉菜單,然後選擇空垃圾桶。