Expensive too has been the mass hiring of classroom assistants: over 180,000 of them now grace the nation's schools, three times as many as in 1997.
大量聘用助教也是要花大钱的：现在英国的助教多达18万名，是1997年的三倍。
Expensive too has been the mass hiring of classroom assistants: over 180, 000 of them now grace the nation's schools, three times as many as in 1997.
大量聘用助教也是要花大钱的：现在英国的助教多达18万名，是1997年的三倍。
Expensive too has been the mass hiring of classroom assistants: over 180, 000 of them now grace the nation's schools, three times as many as in 1997.
大量聘用助教也是要花大钱的：现在英国的助教多达18万名，是1997年的三倍。
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