put one's finger on

基本解釋

Now a much more sophisticated model of Kanzius's radio transmitter had been set up in one corner. John put his finger on the switch.
現(xiàn)在一個(gè)更為復(fù)雜的肯茲尤斯型無(wú)線電發(fā)射機(jī) 擺放在一個(gè)角落里，約翰將手指放在了開(kāi)關(guān)上。

Correctness just doesn't do what it's supposed to do but then also design and design is one of those things it's a little harder to put your finger on initially, but it really is something to bear in mind especially toward terms end when you tackle your own final projects.
正確性“，就是有沒(méi)有做應(yīng)該做事情,然后是“設(shè)計(jì)“,剛開(kāi)始時(shí)，“設(shè)計(jì)“相對(duì)來(lái)說(shuō)比較難一點(diǎn),但是這是直到這個(gè)學(xué)期末,都要記住的東西,當(dāng)你處理的自己的最終方案時(shí)。
哈佛公開(kāi)課 - 計(jì)算機(jī)科學(xué)課程節(jié)選