Vocabulary consisting only from characters you are able to read
変数
hensuu
variable (e.g. math), parametermix
費える
tsuieru
(1)to use up (one's savings), (2)to be wasted (time, effort, etc), (3)to fall apart, to become useless, (4)(arch) to be wiped out (in battle), (5)(arch) to fall apart (one's body or health) ichidan, verb, vintrans
化石
kaseki
zkamenělina, fosílieleda1
交流
kouryuu
(1)(cultural) exchange, interchange, interaction, (inter-) mingling, (social, etc.) networking, intercourse, (2)alternating current, AC suru