Vocabulary consisting only from characters you are able to read
実験者
じっけんしゃ
experimenter, researchermix
渡米
とべい
going to USA, going to Americasuru
生水
なまみず
unboiled watermix
成る
なる
(1)(uk) to become, to get, to grow, to be, to reach, to attain, (2)to result in, to prove to be, (3)to consist of, to be composed of, (4)to succeed, to be complete, (5)to change into, to be excha godan, verb, vintrans