These so-called merits are often offset by its undesirable effects.

这些所谓好处往往被炮产生不良后果抵消了。

The youngsters set off string after string of firecrackers to mark Spring Festival.

孩子们了一串又一串炮, 以欢庆春节。

Setting off firecrackers makes a tremendous noise and causes serious air pollution.

炮会产生巨大噪声,严重染大。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"炮能增添节日,给人们充分表达欢乐兴奋之情机会。"

It will pay in the long run if the setting off of firecrackers is effectively banned in the cities.

"从长远来看,在城市里真正有效地禁炮,是值得。"