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讲解：
upgrade sth
提高(设施、服务等的)档次；改善；使升格:
We plan to upgrade the town's leisure facilities.
我们打算改善镇里的休闲设施。
record sth
录制
Did you remember to record that programme for me?
你记得为我录下那个节目了吗？
phase sth out
逐步废除:
Subsidies to farmers will be phased out by next year.
对农民的补贴将在明年之前逐步废除。
Have a sit down.
坐吧。
vault (over) sth
(用手支撑或撑杆)跳跃,腾跃:
She vaulted over the gate and ran up the path.
她用手一撑跃过栅栏门沿着小路跑了。
