设置: establish; set up; put up bu ...可: approve选: select; choose; pick的: 4次方是 The fourth power of 2 i ...类型: type; mold; form; cut设置可选的层: set selectable layers设置可选的属性: set selectable attributes设置可选的颜色: set selectable colors选择框设置可选择性: selection.setselection可选的: optional; selectable可选的(配件): optional必选或可选的: mandatory or optional泵的类型: pumtypes变量的类型: type of variables补片的类型: patch type错误的类型: contradictory type cast or check大厦的类型: type of block点的类型: point style端的类型: junction class法的类型: types of law附件的类型: type of attachment会议的类型: vi.type of meeting火灾的类型: classes of fire键的类型: form of binding决策的类型: decision-making types