1.commentary ①N-VAR A commentary is a description of an event that is br...
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1.commentary ①N-VAR A commentary is a description of an event that is br...
1.extract ①V-T To extract a substance means to obtain it from something ...
1.integral ADJ Something that is an integral part of something is an ess...
1.porch ①N-COUNT A porch is a sheltered area at the entrance to a buildi...
1.reproach ①V-T If you reproach someone, you say or show that you are di...
1.unprecedented ①ADJ If something is unprecedented, it has never happene...
1.alternate ①V-RECIP When you alternate two things, you keep using one t...
1.elapse V-I When time elapses, it passes. (時(shí)間) 流逝 ? Forty-eight hours h...
1.converge ①V-I If people or vehicles converge on a place, they move tow...
1.ascertain V-T If you ascertain the truth about something, you find out...