For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun.
有几年它的亮度一度达到了现在的太阳亮度的一万倍左右。
We may also be quite confident that the present trend toward a shorter day and a shorter week will be maintained.
我们也可以相当有信心地认为，目前的“日渐短”和“周渐短”的趋势将会保持下去。
We will give our teacher a flower as the festival present on Teachers' Day.
我们将在教师节送给老师一朵花作为节日礼物。
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