【化】 metyridine
armour; first; nail; shell【医】 carapace; concha; conchae; helo-; nail; onycho-; onyx
oxygen【医】 o; O2; oxy-; oxygen; oxygenium; phlogisticated gas
second【建】 acetonitrile; ethane nitrile
【化】 pyridine【医】 pyridina; pyridine