单词：drop in pressure
drop in pressure的用法和样例：
例句
- The steam pressure falls on account of condensation in the cylinder.由于汽缸里的冷凝作用，蒸汽的压力降低了。
- The government has surrendered to pressure of big business and lowered tax rates.政府屈服于大商业的压力降低了税率。
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