同根派生 doubled up相关词英汉例句The old couple doubled up with laughter.老兩口笑得直不起腰來。He doubled up when he was struck in the belly.他的肚子被擊中時,他痛得蹲了下來。They have to doubled up.他們衹得同住一屋。He doubled up in pain.他疼得彎下了腰。doubled up更多例句