by spells

轮流; 断断续续地

1. 断断续续地：by some means or other 用某种办法 | by spells 断断续续地 | by stages 分阶段地

2. 轮班,轮流：by single action ==> 单效压塑 | by spells ==> 轮班,轮流 | by step ==> 步进的,分步测试

1. The Yangtze River has been regularly affected by dry spells since 2000.

2. Shanghai weather at this time of the year is characterized by long heat spells broken only by short bursts of torrential rain.

3. by spells

3. Shanghai weather at this time of the year is characterised by long heat spells broken only by short bursts of torrential rain.

4. by spells

4. The law also spells out that agreements reached in the mediation procedure are legally binding and can be enforced by courts upon one party's request.