[macOS] macOS 输入 df -h 命令，为什么会出现微信读书？

如下所示：

(base) ➜ ~ df -th
Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
/dev/disk3s1s1 460Gi 9.6Gi 144Gi 7% 404k 1.5G 0% /
devfs 197Ki 197Ki 0Bi 100% 682 0 100% /dev
/dev/disk3s6 460Gi 20Ki 144Gi 1% 0 1.5G 0% /System/Volumes/VM
/dev/disk3s2 460Gi 5.8Gi 144Gi 4% 1.2k 1.5G 0% /System/Volumes/Preboot
/dev/disk3s4 460Gi 2.9Mi 144Gi 1% 52 1.5G 0% /System/Volumes/Update
/dev/disk1s2 500Mi 6.0Mi 480Mi 2% 1 4.9M 0% /System/Volumes/xarts
/dev/disk1s1 500Mi 6.2Mi 480Mi 2% 31 4.9M 0% /System/Volumes/iSCPreboot
/dev/disk1s3 500Mi 2.9Mi 480Mi 1% 55 4.9M 0% /System/Volumes/Hardware
/dev/disk3s5 460Gi 300Gi 144Gi 68% 1.6M 1.5G 0% /System/Volumes/Data
map auto_home 0Bi 0Bi 0Bi 100% 0 0 - /System/Volumes/Data/home
/Applications/微信读书.app/Wrapper 460Gi 298Gi 146Gi 68% 1.6M 1.5G 0% /private/var/folders/6t/7stlwdtn5yj5x_hq3d9mrhlh0000gn/X/1B51C8FB-A8C3-5711-BE2D-278BD23492A8