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重点讲解：
1. make sure that
一定要；设法保证；
eg. It is difficult to make sure that the quality remains up without increasing the price.
很难保证做到保持高质量而不提高价格。
eg. He glanced around to make sure that the audience were ready to hear his speech.
他向四周环视以确定听众已准备好听他讲演。
2. first of all
第一；首先；
eg. First of all, could I begin with an apology for a mistake I made last week?
首先，请允许我为上周犯下的错误道歉。
eg. My aim was first of all to determine what I should do next.
我的目标首先是要确定自己下一步该做什么。
3. the odd one out
与集体不合的人；剩下孤零零的一人；异类；
eg. Mark and Rick were the odd ones out in claiming to like this cherry beer.
只剩下马克和里克声称喜欢喝这种樱桃啤酒。
eg. Even at school Kate was the odd one out. She preferred to read books while the others were playing games.
甚至在学校时凯特就与众不同，别人在玩时她宁愿看书。
4. as long as
只要；
eg. As long as you drive carefully, you will be very safe.
如果你开车小心，你就会很安全。
eg. We'll ship the goods at an early time as long as there is a steamer.
只要有船，我们就尽早装货。
5. switch to
转换；改变；转变；
eg. Milk rounds are threatened as customers switch to buying from supermarkets.
随着顾客转而从超市购买牛奶，送牛奶的生意受到了威胁。
eg. Adopt double hand operation switch to guarantee the safety of operators.
采用双手操作开关,保证使用员工的安全性。
6. give it a try
试一下；试试；
eg. I almost can't wait to give it a try.
我等不及要试一试了。
eg. You won't know what you can do until you give it a try.
你要试试才知道你能做什么。
n. 图形，数字，形状; 人物，外形，体型
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