You should not deliberately firm your abdomen, although it does retain a degree of firmness naturally from the uplifting action in your torso.
你不能使腹部僵硬，尽管腹部在躯干向上时要保持一定程度的自然收紧。
So bagging Lower firmness and the content of soluble solids on the certain degree.
说明套袋能在一定程度上降低果实的硬度和可溶性固形物含量。
The basic training is just like the foundation of the skyscraper, the quality of which is decisive to the height and the firmness degree of the building.
基础训练就好比是摩天大厦的地基，地基的质量决定着大厦的高度及坚固程度。
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