You can always use opaque glass if you need to block a street view.
如果你需要挡住外面的街景,你随时可以使用不透明玻璃。
《柯林斯英汉双解大词典》
2
The straight forward approach would be to add a fourth IFblock after looking for credentials from the form fields.
简单的方法是在寻找来自表单字段的凭证之后添加第四个 IF 块。
3
After working with obj after this ifblock, you should set obj to null to enable the garbage collector to reclaim this object to take full advantage of weak references.