1.Alarm and grief at the crisis in his wife's precarious health were enough to distract Liang.
警报和伤心事在他的妻子不稳定的健康危机对转移两是充足的。
2.Mr. Kennedy had been in precarious health since he suffered a seizure in May 2008.
自2008年5月肯尼迪突然发病以来，他的健康状况一直相当危险。
