authuir commented on a change in pull request #12420:
URL: https://github.com/apache/flink/pull/12420#discussion_r443218642
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File path: docs/dev/table/streaming/joins.zh.md
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@@ -140,26 +137,23 @@ FROM
WHERE r.currency = o.currency
{% endhighlight %}
-Each record from the probe side will be joined with the version of the build
side table at the time of the correlated time attribute of the probe side
record.
-In order to support updates (overwrites) of previous values on the build side
table, the table must define a primary key.
+探针侧的每条记录都将与构建侧的表执行 Join 运算，构建侧的表中与探针侧对应时间属性的记录将参与运算。
+为了支持更新（包括覆盖）构建侧的表，该表必须定义主键。
Review comment:
已合并
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