For that reason, anyone being offered what appears to be high-quality coral cheaply would do well to view the matter with a certain degree of scepsis.
另外,


的颜
表里不一,
料集中在小裂隙

,颜
外深内浅,不均匀。
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NASA administrator James Fletcher said the agency will shoot for only five shuttle launches the first year, 1988, and that's less than half the number that NASA had been planning for this year until the accident happened.
美国宇航局局长詹姆斯·弗莱彻表示,计划表里的第一年,也就是1988年,美国宇航局只会进行5次发射任务。这一数字是该机构原计划的不到一半,因为挑战者号失事了。