評論
打印
The reasons for the major step forward in our evolution are mired in controversy,人類進化中最重要一步的起因一直處在爭論之中
step forward站出來；向前進
He took a step forward in his career.
他的事業又向前邁進了一步。
We've made a big step forward in our studies.
我們在學習中前進了一大步。
it's crucial to find out when cooking started.那么關鍵就是找出人類開始烹飪的時間
find out發現；找出來；揭發
We must find out the customs of other countries, so that they will not think us ill mannered.
我們必須知道別的國家的習俗，免得他們會認為我們是沒有禮貌的。
Find out what the conditions of the contract are.
弄清楚合同的條件是什么。
