Lesson 10

  • available: (adj.) ready to be used or taken
  • particular: (adj.)    specific or special, single or specific person, thing,group, class
  • keen: (adj.)    sharp and alert
  • detecting: (verb)   working to discover something
  • mature: (adj., verb) to grow and develop over time
  • vary: (verb) to change something
  • resemble: (verb)    to be or to look similar to something or someone
  • unobserved: (verb)    hidden or unnoticed
  • ferocious: (adj.)    very aggressive and scary
  • contentment: (noun)    the state of being in total happiness