■　flatten out　　　　　横ばい、頭打ちになる
ex) Spending on eating and drinking out-of-home flattened out.
外食による支出は、頭打ちである　　

■　out-of-home eating 　　外食
ex) Out-of-home eating is not a major factor in obesity.
外食が肥満の主要な原因ではない

■　out-of-home … 　　　屋外の
ex) Including billboards, spending on out-of-home advertising will expand by 8.3%.
野外広告への支出は、8.3%上昇するだろう

out-of-home: outside of their homes
ex) Include zoos and museums sales of out-of-home entertainment has been in slump.
動物園や 美術館を含め、屋外娯楽産業の売上は 伸び悩んでいる

■　flatline 水平になる、（心電図のイメージで）死ぬ
ex) Why are your sales flatlining?
なぜ 君の売上は 頭打ちなのか？

ex) My sales have pretty much flatlined since Wednesday of last week.
私の売上は 先週の水曜日以来 横ばい状態が続いている

■　flattening … 頭打ち、水平の
ex) Luxury sales are flattening.
高級品のセールスは 頭打ちである

flattening: make or become flat or flatter
ex) Squeezed by flattening sales, we lost half our market cap.
会社の時価総額は半分にまで落ちた

■　market cap 　時価総額　　cap = capitalization
ex) They become the most valuable company by market capitalization.
時価総額に置いて、もっとも価値のある会社となる

market cap: = market capitalization - one way of measuring a company's total value, based on outstanding shares of stock
ex) Market cap fluctuates with a company's share price.
時価総額は 企業の株価によって 上下変動する

■　 level off 　　　横ばい、頭打ちになる
ex) Prices are beginning to level off.
物価は横ばいになり始めた

level off: remain at a steady level after falling or rising
ex) Inflation has leveled out at an acceptable rate.
インフレは 容認可能なレベルで 横ばいになっている

■ lack of progress 進展の欠如
ex) Many teachers are still trying to teach in inadequate environments and becoming frustrated by their pupils' lack of progress.
多くの教師が 不適切な環境で授業を行っており、生徒の進展の欠如に不満を抱えつつある

lack of progress: a period or state of inactivity
ex) At some organizations there can be a complete lack of progress in meeting educational goals.
多くの団体が 目標達成に対し、進展の欠如に直面している