交易会 [jiāo yì huì] me
trade fair
e.g.
cān jiā jiāo yì huì zhǎn lǎn de chǎng shāng miǎn fèi fēn fā yàng pǐn yǐ yǐn qǐ rén men de xìng qù 。
参加交易会展览的厂商免费分发样品以引起人们的兴趣。
The exhibitors at the trade fair passed out free samples to stimulate interest.
发布会 [fā bù huì] me
conference
e.g.
xīn chǎn pǐn fā bù huì
新产品发布会 ： Product Launch ; new product introduction
招待会 [zhāo dài huì] me
reception
e.g.
jì zhě zhāo dāi huì
记者招待会
press conference;
参加 [cān jiā] me
join; attend; take part in;
e.g.
jī jí cān jiā wén yú huó dòng
积极参加文娱活动
take an active part in recreational activities;
合作 [hé zuò] me
cooperate; collaborate; work together
e.g.
tā bù qíng yuàn de biǎo shì tā yuàn hé jǐng fāng hé zuò 。
他不情愿地表示他愿和警方合作。
He hesitated he would cooperate with the police.