Inmostcitiesandtowns,thehighvolumesofroadtrafficbecomeaproblem.Whatarethecausesofthatandwhatactionscouldbetakentosolvetheproblem?

包舱人在飞机起飞前取消、变更包舱计划，无须承担由此产生的赔偿责任。

Thetermsofpaymentwewishtoadoptareconfirmedandirrevocableletterofcredit.

Weareintroducingourselvesasoneoftheleadingexportersofthesamelineofbusiness.

Somevisitorsareinterestedinothercountries'culturesandtraditions.Howtheylearnotherculturesandtraditions?Whythisisinterestingtosomevisitorsbutnottoothers?