The CEO spoke in a grave tone when announcing the budget cuts to staff.

執行長在向員工宣布預算刪減時，語氣十分嚴肅。

With a grave expression, the supplier promised the shipment would arrive by Friday.

供應商神情莊重地承諾貨物會在週五前送達。

The hiring manager gave a grave nod and assured me she would call back.

招聘經理嚴肅地點了點頭，向我保證她一定會回電。