You have to now write extra code to do the serialization.

必须编写额外代码来执行序列化。

youdao

Very low overhead; typically less than 30% longer runtime and 50% extra code size.

消耗低，一般低于30%的额外运行时间和50%的代码体积增长。

youdao

By adding extra code into the DAO to write all relevant details out to the AUDIT database.

通过添加一些额外的代码到DAO就可以写下相关的细节到审计数据库内。

youdao

It requires a bit of new plumbing and a few extra lines of code for the engine's control computer.

ECONOMIST: Hydrogen-powered cars

Another adds an extra level of security with a code needed to activate the card.

FORBES: Credit Cards Reimagined

This additional optimisation takes extra time, but the fact that the code will subsequently run faster more than makes up for it.

ECONOMIST: Transmetamorphosis