Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
rod – n. a straight, thin stick or bar
unit – n. a single thing, person, or group that is a part of something larger
spoonful – n. as much as a spoon can hold — often + of
dispose of – phrasal verb to throw (something) away : to get rid of (something)
compensation – n. something that is done or given to make up for damage, trouble, etc.
