今週の知らなかった単語
biodegradable...生物分解性の
banana peels are biodegradable materials.
calibrate...調整する
the testing engineer's job is to calibrate car speed meter.
on the dot...時間ぴったりに
the guests arrived at 8 o'clock on the dot.
biodegradable...生物分解性の
banana peels are biodegradable materials.
calibrate...調整する
the testing engineer's job is to calibrate car speed meter.
on the dot...時間ぴったりに
the guests arrived at 8 o'clock on the dot.