Of the highest quality — the best there is. It comes from the picture of a chest of drawers, where the top drawer is where you keep your finest things.

Of the highest quality品質最頂級 — the best there is那種東西裡最好的. It comes from the picture of a chest of drawers它的畫面來自一個五斗櫃, where the top drawer is where you keep your finest things最上面那層抽屜是你放最好東西的地方

Used before a noun it means excellent: top-drawer talent, a top-drawer performance. People also say it after the verb, usually without the hyphen — "her cooking is top drawer" — and that use is common in British speech, where it sounds a bit like praise from an older, well-spoken person.

Used before a noun放在名詞前面用 it means excellent意思是「頂尖的」: top-drawer talent像「top-drawer talent」, a top-drawer performance「a top-drawer performance」. People also say it after the verb人們也會放在動詞後面說, usually without the hyphen通常不加連字號 — "her cooking is top drawer"像「her cooking is top drawer」 — and that use is common in British speech這種用法在英式口語很常見, where it sounds a bit like praise from an older, well-spoken person聽起來像是年紀較長、談吐得體的人給的稱讚

There is an older social meaning too, mostly British and now dated: "out of the top drawer" meant born into the upper class. That one carries a whiff of snobbery, so recognise it rather than say it.

There is an older social meaning too還有一個比較舊的社會意涵, mostly British and now dated主要是英式用法，現在已經過時: "out of the top drawer"「out of the top drawer」 meant born into the upper class意思是出身上流社會. That one carries a whiff of snobbery這個用法帶著一點勢利的味道, so recognise it rather than say it所以聽懂就好，不要自己說

The word is informal and warm; it is praise, not a technical rating.

The word is informal and warm這個字輕鬆又帶著溫度; it is praise它是稱讚, not a technical rating不是技術性的評等