In the beginning few pages we need to print the kid's hand and foot print, stick a family photo and make a design for a free page.

前面几页要求敲上手脚印，贴上全家福，还有一页要求自由创作。

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On one hand the test and evaluation can feedback the structural design of the syringe, optimize the result of design, and improve the integral performance of the needle-free injector;

一方面测试评价可以反馈注射器结构设计，优化设计结果，提高无针注射器整体性能；

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Given a free hand in the design, his team developed a continuously variable transmission system that allows the petrol engine and electric motor to work separately or in tandem.

ECONOMIST: MONITORS: And the winners are... | The