Vocabulary consisting only from characters you are able to read
乗馬
džouba
(1)horse riding/(n) (2)riding horse/saddle horse/(P) leda1, sport, suru
内
uči
(1)inside/within/ (2)while/ (3)among/amongst/between/(pn,adj-no) (4)we (referring to one's in-group, i.e. company, etc.)/our/ (5)my spouse/(n) (6)(arch) imperial palace grounds/ (7)(arch) emperor/( adj, jlpt4, leda1
開通
kaicuu
opening, open, taking effect, becoming activesuru
投下
touka
(1)throwing down, dropping, airdrop, (2)investment suru
図る
hakaru
(1)to plot/to attempt/to plan/to devise/to design/ (2)to take in/to deceive/ (3)to aim for/to have something in mind/ (4)to refer A to B/(P) godan, leda1, verb, vtrans
有休
juukjuu
(abbr) vacation, (paid) holidaymix
工学
kougaku
engineeringmix