您必须在Row中的两个子节点上对Modifier应用weight

Row(
            modifier = Modifier.fillMaxWidth(),
            verticalAlignment = Alignment.CenterVertically,
            horizontalArrangement = Arrangement.SpaceAround,
        ) {
            Text("String3", modifier = Modifier.weight(1F))
            Column(modifier = Modifier.weight(1F)) {
                OutlinedTextField(modifier = Modifier.height(30.dp), value = "", onValueChange = {})
                OutlinedTextField(modifier = Modifier.height(30.dp), value = "", onValueChange = {})
            }
        }

你会看到这样

然后Alignment部分你必须在String3文本上应用textAlign = TextAlign.Center。

Text("String3", modifier = Modifier.weight(1F), textAlign = TextAlign.Center)

最后你会得到。

你可以尝试使用Modifier.weight（..）修饰符，试试看

Row() {
    Column(
        Modifier.weight(1f).background(Blue)
    ){
        Text(text = "Weight = 1", color = Color.White)
    }
    Column(
        Modifier.weight(2f).background(Yellow)
    ) {
        Text(text = "Weight = 2")
    }
}