All codes are optional.

所有的代码都是可选的。

youdao

Note: All codes within one timeslot allocated to the same CCTRCH use the same transmission power in case they have the same Spreading Factor.

注：在一个时隙内被同一CCTRCH 分配的所有码，如果具有同样的扩频因子，则使用同样的发射功率。

youdao

"So those codes are all there. We see them all over our city.

VOA: standard.2010.07.27

He times the ball beautifully, and really should be scoring runs regularly for England in all codes of the game.

BBC: Jonathan Agnew column

The club will be excluded from all competitions, above, but not including, minor (under 18) level in all codes for one year.

BBC: St Mary's Rasharkin GAC violence 'worst seen in 25 years'

All sporting codes have expressed shock at the findings as they pledged full co-operation with ASADA and other investigating authorities.

CNN: Shock as organized crime muscles into Australian sport