45mm
例句释义:1.how much is the size of hairpin? 45mm?发夹的大小是多少？45毫米？
2.They also knocked out our tank with direct fire, destroyed a 45mm gun with its crew, and infpcted significant losses upon our infantry.他们也用直射火力击毁了我们的坦克，并摧毁了一门45毫米炮，其炮班也遭受了伤亡，并给我军步兵造成了严重损失。
3.While its overhang dimensions are shortened by 45mm, its wheelbase is expanded by 80mm, allowing for additional rear legroom.虽然它的悬尺寸缩短45毫米，它的轴距增加了80毫米，使更多的后部腿部空间。
4.The smallest marsupial in all the world is but 45mm in length. So small that when fully grown it can stand comfortable in a dessert spoon.全世界最小的有袋动物只不过45毫米，小到待其完全长大时还能够舒舒服服地站到一只点心匙上。