being in a leading or important position in a field
ある分野でリーダーシップや重要な位置にいること (aru bun'ya de rīdāshippu ya jūyōna ichi ni iru koto)
"The research center is at the forefront of renewable energy studies."
"研究センターは再生可能エネルギーの研究の最前線にあります。" (Kenkyū sentā wa saisei kanō enerugī no kenkyū no **saizensen** ni arimasu.)
a difficult decision to make
in prison
to finish something successfully despite difficulties
to talk very quickly and without stopping
to focus attention closely on something specific
to be easily frightened
