为了减少误解,合同中应预先说明付款条件和违约责任。Wèile jiǎnshǎo wùjiě, hétong zhōng yīng yùxiān shuōmíng fùkuǎn tiáojiàn hé wéiyuē zérèn.To reduce misunderstandings, the contract should state the payment terms and liability for breach in advance.
出国前要预先订好机票和旅馆。Chūguó qián yào yùxiān dìnghǎo jīpiào hé lǚguǎn.Before going abroad you should book the plane tickets and the hotel in advance.
会议的材料请预先发给每位参加者。Huìyì de cáiliào qǐng yùxiān fā gěi měi wèi cānjiāzhě.Please send the meeting materials to every participant in advance.