rate of advance的用法和樣例：
例句
- Under gassy coal seam condition, the full-heading development is employed.Because of the fast heading a high rate of gas emission arises.
在瓦斯含量較大的煤層採用綜掘掘進巷道，由於掘進速度快，出現了瓦斯湧出量過大的現象。 - Light infantry forces form a skirmish line to slow the enemy advance and keep their own line unmolested by enemy skirmishers.
輕步兵用以組成散兵隊形以遲滯敵軍的前進速度，並驅逐敵軍輕步兵以防他們騷擾本軍陣線。
