Buat larutan pengawet. Celupkan kayu putih ke dalam larutan pengawet. Letakkan kayu putih di tempat yang dingin.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
To preserve eucalyptus, mix a solution of one part glycerin with two parts water.  Heat the mixture to boiling or near-boiling. You can obtain glycerin at your local arts and crafts shop or big box store. Once your glycerin and water solution is ready, pour the mixture into a stable, wide-bottomed vase.  Place the eucalyptus branches in the vase with the cut end of the stem in the liquid.  The liquid should reach about three inches (eight centimeters) up the length of the eucalyptus stem. To hel