Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
refit –v. to make something ready for use again, especially with new parts
revise –v. to make changes especially to correct or improve something
renounce –v. to formally give something up
stealth –adj. (technical) describing military aircraft or ships that are designed so that they cannot be easily seen by radar
construction –n. the act or process of building something
allow –v. to permit
