Customer interest in the old model began to wane after the new version launched.

新版本上市後，顧客對舊款的興趣開始減退。

Investor confidence waned as the company reported a third straight quarter of losses.

公司連續第三季公布虧損，投資人的信心逐漸減弱。

By late afternoon, attendance at the trade show had waned considerably.

到了傍晚，商展的參觀人數已明顯減少。