3 sentences

1. 这项政策利大于弊。

   zhè xiàng zhèng​cè lì dà​yú bì.

   The pros of this policy outweigh the cons.

   Source: Dong Chinese Dictionary

2. 此中必有弊，我们需要仔细核查账目。

   cǐ zhōng bì yǒu bì, wǒ​men xū​yào zǐ​xì hé​chá zhàng​mù.

   There must be some malpractice here; we need to carefully audit the accounts.

   Source: Dong Chinese Dictionary

3. 经过长达数小时的激烈比赛，他已感到体力已弊，难以为继。

   jīng​guò cháng​dá shù xiǎo​shí de jī​liè bǐ​sài, tā yǐ gǎn​dào tǐ​lì yǐ bì, nán​yǐ​wéi​jì.

   After several hours of intense competition, he felt physically exhausted and found it difficult to keep going.

   Source: Dong Chinese Dictionary