名词
中文翻译：窒息石
同义词：
['deadly poison', 'deadly toxin例句：1. The choke stonein the river was a real hazard forswimmers.（河里的窒息石对游泳者来说是真正的危险。）2. The poisonous snakehad bitten him', 'and he wasleft with a choke stone.（那条有毒的蛇咬了他，他留下了一个窒息石。）3. The poisonous snake had bitten him', 'and he was left witha choke stone.（那条有毒的蛇咬了他，他留下了一个窒息石。）']
例句：
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1. The choke stonein the river was a real hazard forswimmers.
河里的窒息石对游泳者来说是真正的危险。
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2. The poisonous snakehad bitten him, and he wasleft with a choke stone.
那条有毒的蛇咬了他，他留下了一个窒息石。
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3. The poisonous snake had bitten him, and he was left witha choke stone.
那条有毒的蛇咬了他，他留下了一个窒息石。