发现客人损坏房内设备时,首先应清理好房间。
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Inthepast,peopleusedtotravelabroadtolookmanydifferences.Nowadays,placesallovertheworldaremoreandmoresimilar.Whatarethecausesofthesimilarity?Doyouthinktheadvantagesofthisproblemoutweighthedisadvantages?
Whatproblemsdostaffusuallyhavewhentheyareundertheburdenofaheavyworkload?
温室气体的增多加剧了温室效应。
Ourhopeistoestablishmutuallybeneficialtradingrelationsbetweenus.
TheWorldPopulationExplosion