Both the sealed curing and the fog curing can reduce early age shrinkage ofconcrete, but the initial curing age must be emphasized.
密封养护和喷雾养护均能减小混凝土的早期收缩，但必须要强调养护的“及时性”。
2
Ben holds dear an ambitious goal to retire at the ageof 55, but there is nothing concrete that he does in order to succeed.
班有个远大的目标就是要在55岁的时候退休，但是他却没有因为这个目标而做到任何具体的计划。
3
A mathematic model is set up by probabilistic method for analyzing concrete crack in early age, which is tested by the observation results of a concrete retaining wall case.