One cannot help being struck by a surprising omission.所有人不由得因为一处出人意料的遗漏而感到震惊。

It is not surprising that children learn to read at different rates.小孩子识字的速度不同, 这不足为奇。

it is surprising what/where/how/how many … …令人惊奇

It is surprising how many survived.有这么多人幸存下来, 真是令人惊奇。