The thief tried to burrow a narrow path downward.
小偷试图朝下挖出一条窄窄的通道。
Prices are tending upward [ downward].
物价趋涨[降]。
Downward movement is much faster than upward one.
向下移动比向上移动快得多。
He had a physical strength that matched his outward appearance.
他的体力与他的'外形相称。
Mark showed no outward signs of distress.
马克在外表上没有现出沮丧的神色来。