English translation of '一 ... 半 ... '

数

1. ⇒ 我看她的病一时半会儿好不了。 (Wǒ kàn tā de bìng yī shí bàn huìr hǎobuliǎo.) It seems to me that she's not going to get well for a while.
   ⇒ 这个问题不是一句半句能讲清楚的。 (Zhège wèntí bùshì yī jù bàn jù néng jiǎng qīngchu de.) This can't be explained in a few sentences.