1 . 出煤量
landing shaft 提升井landings出煤量- 基于33个网页
2 . 旅途平安
I hope you have an enjoyable time on holiday . happy landings!我希望你假日愉快,旅途平安!
3 . 降落的时候
it should be noted that most airplane crashes occur during takeoffs and landings.值得注意的是绝大多数的飞机失事均发生在飞机起飞和降落的时候。
4 . 登陆作战
he war included sea fights , air battles and landings., 这场战争包括海战 , 空战 , 登陆作战.