ball rolling的用法和樣例：
例句
- No one seems inclined to ask a question, will you set the ball rolling, Tom?
似乎沒人想要提出問題，湯姆，你能開個頭嗎？ - Although they lost interest in the project, they kept the ball rolling.
他們雖然對這項工程不感興趣，但是仍繼續幹下去。 - All right, we agree to meet you halfway in order to start the ball rolling.
好吧，為了開始做生意，我們同意各讓一步。
