"Food prices will start to skyrocket when the exchange rates move towards a weaker yen."
"Food prices will start to skyrocket when the exchange rates move towards a weaker yen."
"food prices" 「食品価格」
"will start to ~" 「〜を始める」
"to skyrocket" 「上昇」激しく上がると言う意味です。
"when ~" 「〜と」
"the exchange rates" 「為替相場が」
"move towards ~" 「方向に動く」
"a weaker yen" 「円安」