if it is necessary信息详情
如果有必要
if necessary───如果必要的话；如必要的话
if it is───如果是的话
if it is fine───如果没事的话
if it is you───如果是你
if it───如果它
if is───abbr.国际食物信息数据库（InternationalFoodInformationService）；饲料成分标准体系（InternationalFeedIngredientStandards）
necessary───n.必需品；adj.必要的；必需的；必然的；n.(Necessary)（英）内塞瑟里（人名）
if it rain───如果下雨
if it has───如果有
B: I will take a look and see if it is necessary.───B：我一会儿看看有没有必要加班。
For 32-bit applications, consider if it is necessary to migrate to a 64-bit version.───对于32位的应用程序来说，要考虑是否有必要迁移到64位的版本。
If it is necessary to report the incident to the police, get a crime reference number.───如果必需把这件事报告给警察局，要记住参考号码。
I can discuss the matter with you now, if it is necessary.───如有必要，我现在就可以和你讨论此事。
If it is necessary, the service center can immobilize a taxi remotely by 'cutting off the oil or electric supply, ' the company adds.───在必要的时候，服务中心可以远距离切断油路或是供电，使出租车停下来。
However, if it is necessary to have reflection calls, try to have them in init methods so that they are not executed during every request.───不过，如果有必要进行反射调用，则应尽量将其放置在初始方法中，以使其在每个请求期间都不会执行。
If it is necessary, the new location features must be machined as a result of location from the former location features.───如果必要的话，新的定位要素必须作为先前的定位要素的定位结果来加工。
If it is necessary indeed, I can send you some sample towels alone for your confirmation of the quality and texture of the towels.───如果你觉得需要，我可以单独的为你寄一点毛巾样品以便让你确认其质量和结构。
It depends on the situation. If it is necessary, I'm not reluctant to work overtime.
If it is necessary to drill helper holes , never drill in the neighbourhood of the cartridge.
Instead timing circuits use a fixed capacitor and a variable resistor if it is necessary to vary the time period.
How do I trim the aluminum oxide sleeve if it is necessary?
Remove the music tape reproducer from the lavatory if it is necessary.
June Disbud hybrid tea roses for the best blooms and give them a foliar feed if it is necessary.
If it is necessary to sleep during the day, then use thick blinds or an eye mask to create a dark environment.