It's so cold that even the river has frozen.
天气很冷，河都封冻了。
英语解释：to become hard, and often turn to ice, as a result of extreme cold; to make sth do this (使)冻结,结冰:
注：一词多义，单词一次只记一种意思即可。
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It's so cold that even the river has frozen.
天气很冷，河都封冻了。
英语解释：to become hard, and often turn to ice, as a result of extreme cold; to make sth do this (使)冻结,结冰:
注：一词多义，单词一次只记一种意思即可。
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