这让情况得到了一些改善，但是只有当拥有正确工具、训练有素的医护人员参与到接生工作才能产生实质效果。
That got some improvement, but the real gains came when trained health care workers with the right tools attended the births.
当有许多加强马拉松实力的新训练方法产生，你会发现这套40年前的理论许多实质的成就。
While there are new training methods being developed to enhance marathon performance, you will find substantial success with theories that are now 40 years old.
包括注意揭示数学符号的涵义和实质；提供数学语言之间互译的训练。
It includes noticing disclosing the meaning and essence of the mathematics symbol and providing the training of the mutual translating between languages.
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