for one's heat什么意思？

"A 110-meter hurdles race without Liu is such a pity," said Qatar's Mohammed Issa Al-Thawadi, who was lined up in the adjacent lane for Liu's heat. "I feel so bad for him."
italy9pippo和billylang 说的有道理，但问题是为什么是刘的heat，不也是那个运动员的heat吗？还有介词为什么用for？
回复billylang：leave for Shanghai是自己要去的，所以有向、往的意思，运动员的位置都是安排好的，这样解释很牵强。

for one's sake reach out one's hand for sth什么意思 Take one's happy life for granted.什么意思？ submit recommended spare parts for one year's operation If invited to some one's house for dinner,don't be one of the ungrateful fed．句中fed什么意思 do one's homework什么意思? shit one's pant 什么意思 .Without the air to hold some of the sun's heat,the earth at night___,too cold for us to live. one for all,all for one什么意思 One for our ,Our for one什么意思?