工作压力过重会导致抑郁，焦虑，甚至自杀。

We hoped that there will be no repetition of this kind of trouble in the future .

We are introducing ourselves as one of the leading exporters of the same line of business.

毁林对环境的破坏是长期的。

The order is so urgently required that we must ask you to make the earliest possible shipment.