所有的副词都不能单独成句

　　Admittedly, it is rather expensive but you don't need to use much.

　　它的确很贵，但不需要用得很多。

　　Sometimes, avoidance of one particular food will have this beneficial effect, though admittedly rarely.

　　有时，对某一食物的忌口能带来这种好处，尽管不可否认这种情况极为少见。

　　His face will be discreetly concealed by camera angles.

　　通过调整照相机的角度，他的脸将被巧妙地遮住。

　　Garland covered his mouth with his hand and belched discreetly.

　　加兰用手掩住嘴巴，小心地打了一个嗝。