回升；转强的英文

• firm up

• 回升:    rise again; pick up
• 转:    revolve; rotate; turn; swive ...
• 强:    make an effort; strive
• 转强:    firm up; stiffen
• 回升:    rise again (after a fall); pick up 气温回升。 the temperature has gone up again. 指数回升。 the index is picking up