名词中文翻译
中文翻译：拨号保护环
同义词：
['dial', 'ring例句：1. The phone was dialed to the emergency number.（电话被拨打到紧急联系电话。）2. The security guard rings the doorbell for entry.（保安员按门铃以便进出。）3. The ringing of the bell signaled the arrival of the guests.（铃声响起，表示客人的到来。）']
例句：
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1. The phone was dialed to the emergency number.
电话被拨打到紧急联系电话。
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2. The security guard rings the doorbell for entry.
保安员按门铃以便进出。
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3. The ringing of the bell signaled the arrival of the guests.
铃声响起，表示客人的到来。