他在比赛中突然使出一个腿部锁，迫使对手认输。

He suddenly applied a ___leglock during the match, making his opponent surrender.

我的腿被卡在健身器材里动弹不得，简直像中了关节技一样。

My leg got stuck in the gym equipment, putting me in a ___leglock where I couldn't move.