正价加固定附加费合同: cost plus fixed fee contractcost-plus-fixed-fee contract
跟: Ⅰ名词(脚的后部或鞋袜 的后部) heel 短语和例子鞋后跟 the heel of a shoe; 高跟儿鞋 high-heeled shoesⅡ动词1.(在后面紧接着行动) follow 短语和例子跟我学 follow me; 紧跟形势 keep abreast of the current situation; keep pace with the (new) sit
跟上: keep pace with; catch [keep] up with; keep [be] abreast of [with]: 跟上时代的步伐 keep pace with the times; 跟上科学上的最新发展 keep up with the latest development in science; 跟上形势 keep abreast of the cur
