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

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

The results showed that: 1) there was a significant negative correlation between parasitic severity of O. cumana W. and diameter of flower dish, weight per thousand seeeds or weight per dish;

研究表明，向日葵列当寄生严重度与向日葵的花盘直径、千粒重、盘粒重均呈现极显著的负相关；

youdao

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

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