be cautiously optimistic是什么意思

be cautiously optimistic是什么意思 英语翻译That deeper ice and the water itself will be cautiously sampled in a later expedition that will test techniques that may one day be used on Mars.主要是：cautiously sampled cautiously optimistic是什么意思 cautiously optimistic是什么意思 cautiously optimistic是什么意思 Doris walked cautiously in the forest afraid of being attacked by giant snakes这句话是对的么 请问这道题为什么不能选A?谢谢The man moved_____forward and looked over the edge, shrinking his shoulders. A. accurately B. Cautiously C. brilliantly D. disappointedly She walked in the forest.cautiously,afraid of.being attached by giant snakes句子的成分是什么?为什么有两个谓语? He was caught in a traffic jan and he was not ______ late for the meetingA.carelessly B.cautiously C.deliberately D.unexpectedly 句子中的介词为什么用by?Risk compensation refers to an effect by which individuals behave less cautiously when they feel protected. 这句英文很蹩脚,For an indefinite period from here on,mankind is going to advance cautiously ,and consider itself lucky that it can advance at all . matlab中lsqcurvefit怎么用我的数据如下,想求解一个反比例函数,怎么用lsqcurvefit实现啊?x=1:5;y=[1 0.83 0.75 0.71 0.68];plot(x,y)f=@(c,x)1./(c(1)*x+c(2));c0=[0.5 -0.1];[c,resnorm]=lsqcurvefit(f,c0,x,y);其运行结果为：Optimi 问一个倒装句的问题Cautious as the rest of her family (was) ,she didn't seem willing to give an immediate reply to my question 这里cautious为什么不用cautiously? be be be be be