在宽松货币政策的效果有限的情况下，出于对猝不及防的经济增速大幅放缓和失业风险的担忧，中国领导人有可能诉诸财政刺激政策来提振经济增长。请看本报周五的报道：

    China’s leaders, caught off guard by a sharp economic slowdown and worried about the risk of job losses, are likely to resort to fiscal stimulus to revive growth after a run of monetary policy easings proved less effective, policy insiders said.

    The world’s second-largest economy grew at an annual 7 percent in the first quarter, the weakest rate since the global financial crisis, and data since then suggest it has lost further momentum.

    报道中的caught off guard就是“猝不及防”。反之，on guard就是“警

    惕、防范”，通常和against something连用。例如：

    The question caught her completely off guard.

    这个问题令她猝不及防。