第二，他们未能发送书面警告。

___Second, they failed to send written warning.

第二，商业中心的步行区必须扩大，这将使城镇的这一部分更适合步行，并改善商店的机会。

___Second, the pedestrian area in the commercial centre has to grow, which would make this part of the town more pleasant for walking and would improve the opportunities for the shops.

第二，我们需要考虑环境影响。

___Second, we need to consider the environmental impact.