Old men sleep lightly; m. Gillenormand's chamber adjoined the drawing-room, and in spite of all the precautions that had been taken, the noise had awakened him.
老年人的睡眠，容易惊醒；吉诺曼先生的卧室紧连着客厅，尽管大家很小心，仍有声音把他惊醒了。
The engine, as it cooled itself, sucked in air through the outlet hose, producing suction in the vacuum chamber, and so drawing the plunger down and compressing the spring.
当引擎冷却时，通过出口软管吸入空气，在真空管产生吸气，导致柱塞向下挤压弹簧。
The engine, as it cooled itself, sucked in air through the outlet hose, producing suction in the vacuum chamber, and so drawing the plunger down and compressing the spring.
当引擎冷却时，通过出口软管吸入空气，在真空管产生吸气，导致柱塞向下挤压弹簧。
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