But we don't want B to pile up.

但我们不想让B积聚起来。

Slowly, the money began to pile up.

慢慢地，钱凑齐了。

Tip: Make sure the inbound work does not pile up.

提示：确保到达的工作不会堆积起来。

Negative effects will pile up if it continues.

如果继续，负面作用将越积越多。

Boats often pile up on the rocks in the shallow water.

船常常在浅水处触礁搁浅。