It had long been thought that hummingbirds, which forage by day, pollinate its red flowers and that hawkmoths, which forage at night, pollinate its white flowers.

长期以来，人们一直认为，白天觅食的蜂鸟会给它的红色花朵授粉，而晚上觅食的鹰蛾会给它的白色花朵授粉。

youdao

As you can imagine, it had long been out of fashion in Milton's own day.

可以想象，就算是在弥尔顿时期这种诗也早就过时了。

youdao

It had long been widely held that the varieties of humankind reflected the action of different climates.

人们长期以来就普遍认可这样的观点，即不同的人种反映了不同的气候作用。

youdao

I felt close to that kind of thing because I had denied it and had been left away from it so long.

VOA: special.2010.05.23

As you can imagine, it had long been out of fashion in Milton's own day.

可以想象，就算是在弥尔顿时期这种诗也早就过时了。

耶鲁公开课 - 弥尔顿课程节选

It has been tempered in a celestial fire in ether, and it was the ether of the ethereal heavens that had always been thought -throughout the Renaissance and long before, of course -- to be the most perfect substance imaginable.

它是在广阔苍穹的天国之火中被锻造出，也是飘渺的天堂中的以太,不断地被提及,-贯穿于文艺复兴的始终，当然--是可想见的最完美的物质。

耶鲁公开课 - 弥尔顿课程节选

It had long been a dream of the company's cofounder, engineer Alfred W. Fielding.

FORBES: Wrap Star

It had long been known that criminals from the south had put down roots in the richest parts of the country.

ECONOMIST: Mafias on the move

The minister said it had long been his view that "there should be a single integrated teacher training system in Northern Ireland".

BBC: Northern Ireland Assembly