İsviçre göç politikasını sertleştirdi.
- Switzerland hardened its immigration policy.
O kili ateşe koyarak sertleştirdi.
- He hardened clay by putting it into a fire.
The harsh fall weather steeled them against the colder winter.
When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not let the people go. — KJV, Exodus 4:21.