同学你好，该知识点来自沪江网校《大学英语四六级【连读班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好。
查询英英字典，floating有两个意思
1. buoyant or suspended in water or air.
近义词：
buoyant
buoyed up
nonsubmerged
on the surface
above water
2. not settled in a definite place; fluctuating or variable.
例句：the floating population that is migrating to the cities
近义词：
unsettled
not settled
not fixed
transient
temporary
variable

其中第二个意思就是“悬而未决的”哦~