by free和for free區別

by free:

通過免費的

Today， this initiative has been superceded largely by free WiFi access because people buy more and more laptops.

如今，這一舉措在很大程度上已被免費 WiFi 訪問取代，因為人們購買越來越多的筆記本電腦。

for free:

免費

Are the meals for free?

這些飯是免費的嗎