That number has been declining steadily since the 1950s.
这个数量自从1950年就开始下降。
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Revenues are declining at all three networks.
三个公司的总收入都在下降。
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These birds have been declining a lot recently.
这些企鹅的数量最近下降了很多。
BBC 听力 2016年6月合集
Over recent years they haven't yet declined.
近年来也没有下降。
VOA慢速英语_世界
The flying insects that swifts eat also appear to be declining.
雨燕捕食的飞虫似乎也在减少。
BBC 听力 2013年11月合集
Global production has been declining since 2004 while consumption has risen.
全球产量自2004年开始下降,而消费量却在上升。
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People would see that, oh, the health of the grass is declining.
人们会看到,哦,草原的环境每况愈下。
NPR音讯 2021年9月合集
And they're showing that the antibody levels are declining over time.
他们表明抗体水平随着时间的推移而下降。
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And though print ad sales still dwarf their online and mobile counterparts, revenue from print is still declining.
尽管纸质版报纸的广告销售额仍让在线和移动报纸相形见绌,但是纸质版报纸的收入仍在下滑。
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But her health, it was declining.
但她的健康状况每况愈下。
英语百科
Decline
Decline involves change over time, for example:
Note: distinguish the noun decline from the adjective obsolete. Decline refers to the degenerating of something (compare obsolescence) whereas obsolete refers to the outdatedness of something or labels something as no longer in use. Decline represents the process of declining, a gradual sinking and wasting away.