Hayley教口語，“碰運(yùn)氣的”用英語怎么說？

adj. /?h?t.?n?m?s/

If something is hit-and-miss, you cannot depend on it to be of good quality, on time, accurate, etc.

沒準(zhǔn)的，碰運(yùn)氣的

The trains are often late, so getting to work on time is a fairly hit-and-miss affair.

火車經(jīng)常晚點(diǎn)，所以準(zhǔn)時(shí)上班在很大程度上是件碰運(yùn)氣的事。

I'm really sorry, my internet connection has been a bit hitand miss today.

對(duì)不起，我的互聯(lián)網(wǎng)連接今天有點(diǎn)時(shí)好時(shí)壞。