@Marco_Piani @CedScherer Perhaps by "upwards of 4" they mean at least 4. It isn't really clear.
https://www.merriam-webster.co...
https://dictionary.cambridge.o... https://t.co/nFlPd6mFFR
@Marco_Piani@CedScherer可能指的是至少4个。现在还不清楚。
https://www.merriam-webster.co...
https://dictionary.cambridge.o... https://t.co/nFlPd6mFFR