Not natively. MediaFire does not offer official batch download with a single link. However, there are workarounds:
The keyword “thmyl-300-labh-flash-brabt-wahd-mn-mydya-fayr” represents a real demand for batch downloading from MediaFire. While no magic single link exists for 300 separate file links, you have solid solutions: thmyl-300-labh-flash-brabt-wahd-mn-mydya-fayr
This suggests the user is looking for a way to download (possibly small flash files or archives) from MediaFire using a single link instead of 300 separate ones. Not natively
“لو سمحت، ضع الملفات في مجلد واحد وأرسل رابط المجلد” (Please put the files in one folder and send the folder link.) thmyl-300-labh-flash-brabt-wahd-mn-mydya-fayr