Participates
v. 參加, 參與( participate的第三人稱單數 )
??? 情景例句
This is the big moment.
這可是關鍵時刻。
I'd like to take off for home tomorrow.
我想下星期五請假。
which is, in fact, much more complicated.
地震波的運動實際比這要復雜得多。