名詞 participation:

1. the act of sharing in the activities of a group
   同義詞：engagement, involvement, involution
2. the condition of sharing in common with others (as fellows or partners etc.)
   同義詞：involvement

1. By the way, must we guarantee in any way our participation in the tender?
   順便問(wèn)一下，我們應(yīng)為參加投標(biāo)做一點(diǎn)保證嗎？
2. His participation is not welcomed.
   他的參與不受歡迎。
3. We win the game because of his participation.
   由于他的參與，我們贏了比賽。

par.tic.i.pa.tion

n.（名詞）
The act of taking part or sharing in something:
參與：參與或分享某事的行為：
例句：
Teachers often encourage class participation.
教師常鼓勵(lì)學(xué)生積極參與

【引伸】
partic.ipa.tional
adj.（形容詞）