只要可行，将错误处理纳入，并建构您自己的错误讯息。
Include error handling whenever practical and construct your own error messages.
在泡沫垫装饰附件的功能必须扩大，只要可行之前，设计约束。
The trim attachment feature in the foam pad must be extended as long as feasible pending the design constraints.
只要可行，此类公布应在该要求的生效日期前21天做出，但无论如何不得迟于该生效日期。
Such publication shall take place, whenever practicable, 21 days prior to the effective date of the requirement but in all events not later than such effective date.
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