res is the usual result of an I/O operation: the number of bytes transfered, or a negative error code.

res是IO操作的通常结果：传输的字节数，或者负值的错误码。

youdao

A hero named S. H. O. C. lent his Darkforce to Spider-Man in order to help him save some civilians from a vortex leading into the Negative Zone.

一位叫做“天惊”的英雄将他的暗黑力场借予蜘蛛侠以帮助他救助一些将被旋涡卷入负面空间的市民。

youdao

The blood is type o negative, which can be used with any patient, regardless of their own blood type.

人造血血型为O型阴性，可用于治疗任何血型的病人。

youdao

It's still shaped kind of like a pint of O-negative.

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