例句
He observes keenly but says very little.
他观察敏锐， 但说得很少。
But he warned of a barrier to mobile phone take-up that is felt keenly in villages.
但他警告那些手机用户，他敏锐地感觉到在农村里这是一个极大的障碍。
Peace again! – The exquisite hour before dawn, here at my old desk — seldom have I realized so keenly, appreciated so fully, these still, dark hours.
又是安静!黎明前的美妙的时间，就在我的旧书桌前——我从未如此敏锐地认识，如此心怀感激，这些仍旧黑暗的时间。