The fossil fuels (coal and oil) are finite resources.化石燃料（如煤和石油）属于有限资源。Universities are facing grave problems because of diminishing resources.由于资源的减少，大学正面临严峻的问题。It isn't them who use up the world's resources.并...
The police had a watertight case. They even got his fingerprints from that glass cabinet.警方找到了确凿的证据。他们甚至在那个玻璃橱柜上提取到了他的指纹。The flask is completely watertight, even when laid on its side...即使平放，这个真空水杯也是滴水不漏。What do you do i...
She livened up when Alan asked her to dance.艾伦请她跳舞她便来了精神.The acrobatic troupe livened the garden party up immensely.杂技团的表演使游园会大为活跃.At least her silly remarks livened the meeting up a bit.她那番憨话至少使晚会稍有了点生气....