pressure build-up短语¹⁴⁴⁹⁷²⁺² 基本例句 压力增大 A balloon expands as the pressure inside the balloon increases.气球中的压力增大时,气球就会膨胀。 The process is usually preceded by water uptake, increasing the pressure on the cell wall, which stretches.这个过程通常发生在细胞吸水之后,使得细胞壁压力增大,细胞壁伸展。