玩具销售额在圣诞节前夕达到最高峰,现已逐渐下降.Toy sales peaked just before Christmas and are now decreasing.每当圣诞前夕我们都到祖母家去.On Christmas Eves we go to Grandma's home.暴风雨前夕云层集结.Cloulds gather before a storm....
The targets would not be achieved unless other departments showed equal commitment.除非其他部门同样努力，否则这些目标无法达成。The South African mailboat arrived on Friday mornings unless bad weather intervened.除非受恶劣天气干扰，南非邮船一般在星期五上午抵达。All bi...