色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

There is no such thing as work-life balance. Everything worth fighting for unbalances your life.

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

傳統與創新不是對立的——它們是進步的伙伴。

The hardest decisions often require balancing short-term gains with long-term consequences.