First, we create one TreeViewer that can display NBA or MLB players according to your choice.
首先，创建一个可以根据选择显示NBA或MLB球员的TreeViewer。
Some MLB players are using pink bats today as part of the breast cancer awareness campaign on Mother's Day.
在母亲节这一天，一些美国职业联盟的选手通过使用这种球棒来参与乳癌防治的宣传。
Some MLB players are using pink bats today as part of the breast cancer awareness campaign on Mother's Day.
在母亲节这一天，一些美国职业联盟的选手通过使用这种球棒来参与乳癌防治的宣传。
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