The fire alarm bell will be sounded intermittently during the fire drill. Please remain clam should you not participate in this event.
火警演习期间，消防警钟将会间歇性鸣响约十秒，如贵户不参加是次演习，请保持镇定及无须理会。
The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.
蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。
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