求翻译：别克轿车的商业形势并不乐观，此外，还有广州本田雅阁、帕萨特等车和上海别克的较量，若别克想在市场上占据他的一定份额就必须采取较为有效的商业手段。是什么意思？

Buick business situation is not optimistic, and waiting there is Guangzhou Honda Accord, Passat and the battle of Shanghai Buick, Buick to occupy in the market, he must share one must take a more effective means of business.