happen upon

基本解釋

But if scientists happen upon pure fusion, who knows what they might do with it?
但是如果科學(xué)家開啟上面的純核聚變反應(yīng)堆，誰知道他們可能會用它來做什么？
But now, if you happen upon an old episode, Elaine just looks cool — and of-the-moment.
不過如果你現(xiàn)在正巧看到一集“宋飛正傳”的老片段，你會發(fā)現(xiàn)“伊蓮”看起來好極了，而且很時髦。
Turn a corner and you will happen upon the startling green of the winter harvest, of men bending over paddy fields with nothing for tools but their bare hands.
拐過一個彎，冬天里令人稱奇的綠色沃野撲面而來，農(nóng)人們沒有工具，全憑雙手在稻田里躬身勞作。

Just as your lover's caress brings you to orgasm, your eyes happen to fall upon a shoe.
正當(dāng)情人的愛撫使你進(jìn)入高潮的時候，你的目光恰巧落在了鞋子上。
耶魯公開課 - 心理學(xué)導(dǎo)論課程節(jié)選

Fortunately, the case of Mvscles and Muscles is merely a strange occurrence when people oceans apart happen upon a few seconds of pop panache that sound eerily similar.
FORBES: Boston Electronic Duo Mvscles And The Case Of Musical Coincidence
Pulling out the battery is the only option for recovery, so if you happen upon a scene that you want to capture right away, having a camera that occasionally fails is far from ideal.
ENGADGET: Pentax Q interchangeable lens camera review Hands-on