跪拜 

Pinyin: guì bài 
Meaning：Worship on bended knees  
Sentence：许多朝圣者心虔意诚地在神殿跪拜。Many pilgrims knelt piously at the shrine.

More: 

跪： 

Pinyin: guì
Meaning: Kneel
Radical: 足
Stokes: 13
Traditional: 跪
Common words/Phrase:
跪下 [guì xia] 【kneel down】 
跪倒 [guì dǎo] 【prostration】
跪拜 [guì bài] 【worship on bended knees】
跪姿 [guì zī] 【kneeling position】
跪垫 [guì diàn] 【hassock】

拜： 

Pinyin: bài
Meaning: Worship
Radical: 手
Stokes: 9
Traditional: 拜
Common words/Phrase:
拜访 [bài fǎng] 【pay a visit】
拜托 [bài tuō] 【request】
拜年 [bài nián] 【pay a new year call】
拜见 [bài jiàn] 【pay a formal visit】
拜金 [bài jīn] 【mammonish】