developmentn.发展；开发；生长；进展；[摄]显影；新开发区development cost开发成本development line演化线development toll开发费；研制代价development trend发展趋势development plans发展计划development trial开拓试验,试制舰船,试航Development realm发展领域development modes发展模式development goals发展目标Development Speed发展速度