So far $9million has been spent on the programme, and NASA is watching closely to see how it pans out.
该项目到目前为止已经花费了900百万美元,美国宇航局正在密切关注它的进展。
The company is watching the situation closely, he said.
他还说,丰田公司正在密切关注这一情况。
What's clear is that both companies are likely to continue watching each other's moves closely.
不过毋庸置疑地是,两家公司都可能都会继续密切关注对方的一举一动。
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