多行输入使用TextArea。
参考文档
"TextArea组件" (https://link.segmentfault.com/?enc=vK%2BwILcwnISNNvjvllq6Sg%3D%3D.aMpQbeor7YqVcrz3TiXjC8yP7zL0vGkU1eJUbKgvej%2BuBkBoZpufUYMYC2zVa1cAsKV%2Fu3JC81IUCQkAJQEUm%2FLeOtMAXN4gxYIeShlUHjSUPvsGc3MCA2nn2g%2FFQLPOb%2BPA9MkkIL1SLdXeY1aSRVhAy%2F9Szb5Y07yudS%2Bro0Y%3D)