The pain may be constant or it may occur only occasionally.
这种疼痛可能会持续也可能是偶尔发生的。
The root cause is usually software, but may occasionally be hardware related.
这个问题通常由软件引起，但是偶尔也和硬件有关。
And even if the system can be beaten occasionally, it may not matter.
即使系统真的偶然被欺骗，那也没多大关系。
If you cough occasionally, you may just be suffering from a common cold.
如果你偶尔咳嗽，你可能只是得了普通流感。
Such offenses occasionally may involve planning or be committed for hire.
一些罪行偶尔会涉及计划或雇人行凶。
Meat may arrive only occasionally, after a successful hunt, and be cause for celebration.
偶尔，在一次成功的狩猎之后，因为要庆祝，会有肉类出现。
Only occasionally may a section of the network be brought down for preventive maintenance.
只有在预防性维护时，网络中的某一区段才会偶尔停止运行。
Meat may arrive only occasionally, after a successful hunt, and be cause for celebration.
偶然，正在一次成功的狩猎之后，由于要恭喜，会有肉类出现。
Meat may arrive only occasionally, after a successful hunt, and be cause for celebration.
偶然，正在一次成功的狩猎之后，由于要恭喜，会有肉类出现。
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