He was ahead of the record then, and gaining day by day.

当时已经破了记录, 而且还新。

He signed up for the next class, but says he will consider the risks day by day.

他报名参加了下一节课，但表示考虑风险。

Yet even the best batteries will diminish daily, slowly losing capacity until they finally die.

即使如此，连好的电池也消耗，慢慢的失去它的容电量直到后再也无法供电。

But researchers still struggle to collect data from the deep ocean, and to detect the long-term trends underlying day-to-day variations in temperature.

但研究人员仍在努力从深海收集数据，并检测气温变化背后的长期趋势。

Anti-EU parties will no doubt become stronger and noisier, but they lack the numbers and the cohesion fundamentally to change EU business in the European Parliament.

反欧各党必强大，反对声音也渐加大，但他们的盟友太少，且眼下缺少彻底改变欧盟大事在欧洲议地位的凝聚力。

Since July, the province's rainfall dropped nearly half compared to the same period in previous years, which led to the lake's water level dropping day by day after mid-July, domestic media reported.

据国内媒体报道，自 7 月以来，全省降雨量同比下降近一半，导致 7 月中旬后湖水水位下降。