Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
approach - n. to move or become near or nearer to something or someone
boost - n. to increase the force, power, or amount of (something)
ceramic - adj. made of clay that has been heated to a very high temperature so that it becomes hard
characterize - v. to describe the character or special qualities of (someone or something)
foam - n. a soft material that is used to make many products
probe - n. a device that is used to obtain information from outer space and send it back to Earth
solar - adj. of or relating to the sun
