1、 The male riflebird exploits both of these modes of signaling simultaneously in his courtship display.
雄性雷射鸟在求爱时会同时利用这两种信号模式。
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2、 All too often such policies are an insincere form of virtue signaling that benefits only the most privileged and does little to help average people.
这些政策往往是一种虚假的美德信号，其只会让最有特权的人受益，而对普通人几乎没有帮助。
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