She represents a power that might enable Milton to warble a right or proper song.

她象征着一种力量,也许那种力量可以让弥尔顿也婉转的唱出一首恰如其分的歌。

耶鲁公开课 - 弥尔顿课程节选

It's just this interest in the right, the proper form of warbled song that's so important here.

这就是这首颤抖歌曲的，恰如其分的形式在这里是如此重要。

耶鲁公开课 - 弥尔顿课程节选

The respiratory system plays an important role in maintaining our internal environment at the proper level of oxygen, by bringing the right amount in.

呼吸系统的重要性在于,通过向体内输入适量的氧气,维持人体内环境中的氧平衡

耶鲁公开课 - 生物医学工程探索课程节选