echo $ff->jia(); 析构函数(__destruct) 析构函数(destructor) 与构造函数相反，当对象结束其生命周期时（例如对象所在的函数已调用完毕），系统自动执行析构函数。
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Self-Destruct 自爆 ; 自毁 ; 自我毁灭装置 ; 搭
destruct code 破坏之核 ; 毁坏之核 ; 自毁代码
Self-Destruct Device 自毁装置
Self-destruct System 自爆装置
Before I Self Destruct 在我自毁之前 ; 唱片名
Destruct Limit 破坏极限
command destruct signal 自毁指令信号
Self Destruct 瞬发技能 ; 自毁
missile destruct 导弹自毁
V to destroy (one's own missile or rocket) for safety 为安全而自毁(导弹或火箭)
N the act of destructing 自毁
ADJ designed to be capable of destroying itself or the object, system, or installation containing it 为可自毁而设计的
destruct mechanism
This tape will self-destruct in 30 seconds.
这盘磁带将在30秒后自毁。
They're going to be famous, but unless something happens, they're going to self-destruct.
他们将会出名，但如果照此下去，他们会走向毁灭。
Using certain APIs, like credit card checkouts and self-destruct switches is not practical.
使用某些API，比如信用卡签出和自释开关，是不可行的。
He developed what he calls a suicide molecule that acts like the protein which tells cells to self-destruct.
VOA: special.2010.03.16
And that if we want a positive earth for future generations, we all need to make commitments to be change agents so that we don't destruct our natural resources."
VOA: special.2010.01.21
It acts like the protein that directs cells to self-destruct.
VOA: special.2010.05.19
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