moreover, the processing of vibration signals has become much more difficult because a full-of-oil complex gearbox system has been considered to record raw vibration signals.
此外,因为一个复杂的齿轮箱系统被用来记录原始的振动信号,因而振动信号的处理就变得更加困难。
private equity has piles of unallocated capital, although it has become much more difficult to wrest undrawn funds from investors.
尽管它越来越难从投资者那里获得那些不打算取回的资金,私人股本仍然怀揣大量无处可投的资金。
but common action—to create public goods—has become much more difficult today.
但是,今时今日,旨在创造公益的共同行动变得更加难以展开。