We would like to point out that delivery before Christmas is essential and hope you can offer us that guarantee.
我们想指出圣诞节前交货很重要并希望贵方能就此向我们作出保证。
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.
火灾过后,所有的管道和龙头都被标得一清二楚,而且加入劳动队伍的新工人在开始工作之前要接受有关的安全教育。