to focus attention closely on something specific
特定のことに集中する (tokutei no koto ni shuchu suru)
"We need to zone in on the main customer problem."
"私たちは主要な顧客の問題に集中する必要があります。" (watashitachi wa shuyo na kokyaku no mondai ni shuchu suru hitsuyo ga arimasu)
a call to take action, especially to defend a cause
getting old
to go to ground; to take cover or hide
to do something secretly without their knowledge
to do something different or unconventional
to barely have enough money to survive