如图：红色框中占位符或者字，如何随文本中的信息显示而显示，消失而消失，求解？

<view class="people-route">
 <text class="people-content">{{carpooling.departure_address}}</text>
 <text class="people-arrow">→ </text>
 <text class="purpose-content">{{carpooling.end}}</text>
 <text>（</text>
 <text class="channel-centent">{{carpooling.channel}}</text>
 <text>）</text>
</view>
<view class="people-seat-list">
 <view class="people-model-title">车型：</view>
 <view class="people-model">{{carpooling.vehicle_type}}</view>
 <view class="people-seat">{{carpooling.people}}空位</view>
</view>