螺旋托辊：用于清除输送带上的粘料，保持带面清洁。
Spiral roller: Used to remove the sticky material on the conveyor belt, to keep an area clean.
韦弗斯称，救援人员已经想办法为受困矿工提供了保暖带和毛毯，好让矿工可以在救援期间保持温暖。
Crews have managed to provide heat packs and blankets to the miners so that they can keep warm during the rescue operation, Verfuss said.
我的一些同学赞成带手机上学，因为他们能与父母保持联系。
Some of my classmates are in favour of taking phones to school because they can keep in touch with their parents.
应用推荐