"I use an investment trust to diversify my investments in companies from America and around the world."
"I use an investment trust to diversify my investments in companies from America and around the world." "I use ~" 「〜を利用して」 "an investment trust" 「投資信託」"mutual fund" も言えます。 "to diversify my investments" 「分散投資するために」 "in companies from America and around the world." 「米国株や全世界株に」 "America" の代わりに "the US" や "the USA" も使えます。 "around the world" 「全世界」