But from the earliest possible moment when it might arrive, William was on the watch for it.

但从邮件可能到达的最早时刻起，威廉就守望着它。

With Bill's warning in mind, Harry could not help suspecting that Griphook was on the watch for possible skullduggery.

有了比尔诚心的提醒，哈利不得不怀疑拉环在时刻监视着他们任何可能采取的诡计。